Index: stable/6/share/zoneinfo/africa =================================================================== --- stable/6/share/zoneinfo/africa (revision 283046) +++ stable/6/share/zoneinfo/africa (revision 283047) @@ -1,1183 +1,1192 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # This file is by no means authoritative; if you think you know better, # go ahead and edit the file (and please send any changes to # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. # From Paul Eggert (2014-10-31): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), # San Diego: ACS Publications, Inc. (2003). # Unfortunately this book contains many errors and cites no sources. # # Gwillim Law writes that a good source # for recent time zone data is the International Air Transport # Association's Standard Schedules Information Manual (IATA SSIM), # published semiannually. Law sent in several helpful summaries # of the IATA's data after 1990. Except where otherwise noted, # IATA SSIM is the source for entries after 1990. # # Another source occasionally used is Edward W. Whitman, World Time Differences, # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which # I found in the UCLA library. # # For data circa 1899, a common source is: # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. # http://www.jstor.org/stable/1774359 # # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). # # Previous editions of this database used WAT, CAT, SAT, and EAT # for +0:00 through +3:00, respectively, # but Mark R V Murray reports that # 'SAST' is the official abbreviation for +2:00 in the country of South Africa, # 'CAT' is commonly used for +2:00 in countries north of South Africa, and # 'WAT' is probably the best name for +1:00, as the common phrase for # the area that includes Nigeria is "West Africa". # He has heard of "Western Sahara Time" for +0:00 but can find no reference. # # To make things confusing, 'WAT' seems to have been used for -1:00 long ago; # I'd guess that this was because people needed _some_ name for -1:00, # and at the time, far west Africa was the only major land area in -1:00. # This usage is now obsolete, as the last use of -1:00 on the African # mainland seems to have been 1976 in Western Sahara. # # To summarize, the following abbreviations seem to have some currency: # -1:00 WAT West Africa Time (no longer used) # 0:00 GMT Greenwich Mean Time # 2:00 CAT Central Africa Time # 2:00 SAST South Africa Standard Time # and Murray suggests the following abbreviation: # 1:00 WAT West Africa Time # I realize that this leads to 'WAT' being used for both -1:00 and 1:00 # for times before 1976, but this is the best I can think of # until we get more information. # # I invented the following abbreviations; corrections are welcome! # 2:00 WAST West Africa Summer Time # 2:30 BEAT British East Africa Time (no longer used) # 2:45 BEAUT British East Africa Unified Time (no longer used) # 3:00 CAST Central Africa Summer Time (no longer used) # 3:00 SAST South Africa Summer Time (no longer used) # 3:00 EAT East Africa Time # Algeria # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Algeria 1916 only - Jun 14 23:00s 1:00 S Rule Algeria 1916 1919 - Oct Sun>=1 23:00s 0 - Rule Algeria 1917 only - Mar 24 23:00s 1:00 S Rule Algeria 1918 only - Mar 9 23:00s 1:00 S Rule Algeria 1919 only - Mar 1 23:00s 1:00 S Rule Algeria 1920 only - Feb 14 23:00s 1:00 S Rule Algeria 1920 only - Oct 23 23:00s 0 - Rule Algeria 1921 only - Mar 14 23:00s 1:00 S Rule Algeria 1921 only - Jun 21 23:00s 0 - Rule Algeria 1939 only - Sep 11 23:00s 1:00 S Rule Algeria 1939 only - Nov 19 1:00 0 - Rule Algeria 1944 1945 - Apr Mon>=1 2:00 1:00 S Rule Algeria 1944 only - Oct 8 2:00 0 - Rule Algeria 1945 only - Sep 16 1:00 0 - Rule Algeria 1971 only - Apr 25 23:00s 1:00 S Rule Algeria 1971 only - Sep 26 23:00s 0 - Rule Algeria 1977 only - May 6 0:00 1:00 S Rule Algeria 1977 only - Oct 21 0:00 0 - Rule Algeria 1978 only - Mar 24 1:00 1:00 S Rule Algeria 1978 only - Sep 22 3:00 0 - Rule Algeria 1980 only - Apr 25 0:00 1:00 S Rule Algeria 1980 only - Oct 31 2:00 0 - # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 0:00 Algeria WE%sT 1940 Feb 25 2:00 1:00 Algeria CE%sT 1946 Oct 7 0:00 - WET 1956 Jan 29 1:00 - CET 1963 Apr 14 0:00 Algeria WE%sT 1977 Oct 21 1:00 Algeria CE%sT 1979 Oct 26 0:00 Algeria WE%sT 1981 May 1:00 - CET # Angola # Benin # See Africa/Lagos. # Botswana # See Africa/Maputo. # Burkina Faso # See Africa/Abidjan. # Burundi # See Africa/Maputo. # Cameroon # See Africa/Lagos. # Cape Verde # # Shanks gives 1907 for the transition to CVT. # Perhaps the 1911-05-26 Portuguese decree # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf # merely made it official? # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia -2:00 - CVT 1942 Sep -2:00 1:00 CVST 1945 Oct 15 -2:00 - CVT 1975 Nov 25 2:00 -1:00 - CVT # Central African Republic # See Africa/Lagos. # Chad # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena 1:00 - WAT 1979 Oct 14 1:00 1:00 WAST 1980 Mar 8 1:00 - WAT # Comoros # See Africa/Nairobi. # Democratic Republic of the Congo # See Africa/Lagos for the western part and Africa/Maputo for the eastern. # Republic of the Congo # See Africa/Lagos. # Côte d'Ivoire / Ivory Coast # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Abidjan -0:16:08 - LMT 1912 0:00 - GMT Link Africa/Abidjan Africa/Bamako # Mali Link Africa/Abidjan Africa/Banjul # Gambia Link Africa/Abidjan Africa/Conakry # Guinea Link Africa/Abidjan Africa/Dakar # Senegal Link Africa/Abidjan Africa/Freetown # Sierra Leone Link Africa/Abidjan Africa/Lome # Togo Link Africa/Abidjan Africa/Nouakchott # Mauritania Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe Link Africa/Abidjan Atlantic/St_Helena # St Helena # Djibouti # See Africa/Nairobi. ############################################################################### # Egypt # Milne says Cairo used 2:05:08.9, the local mean time of the Abbasizeh # observatory; round to nearest. Milne also says that the official time for # Egypt was mean noon at the Great Pyramid, 2:04:30.5, but apparently this # did not apply to Cairo, Alexandria, or Port Said. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Egypt 1940 only - Jul 15 0:00 1:00 S Rule Egypt 1940 only - Oct 1 0:00 0 - Rule Egypt 1941 only - Apr 15 0:00 1:00 S Rule Egypt 1941 only - Sep 16 0:00 0 - Rule Egypt 1942 1944 - Apr 1 0:00 1:00 S Rule Egypt 1942 only - Oct 27 0:00 0 - Rule Egypt 1943 1945 - Nov 1 0:00 0 - Rule Egypt 1945 only - Apr 16 0:00 1:00 S Rule Egypt 1957 only - May 10 0:00 1:00 S Rule Egypt 1957 1958 - Oct 1 0:00 0 - Rule Egypt 1958 only - May 1 0:00 1:00 S Rule Egypt 1959 1981 - May 1 1:00 1:00 S Rule Egypt 1959 1965 - Sep 30 3:00 0 - Rule Egypt 1966 1994 - Oct 1 3:00 0 - Rule Egypt 1982 only - Jul 25 1:00 1:00 S Rule Egypt 1983 only - Jul 12 1:00 1:00 S Rule Egypt 1984 1988 - May 1 1:00 1:00 S Rule Egypt 1989 only - May 6 1:00 1:00 S Rule Egypt 1990 1994 - May 1 1:00 1:00 S # IATA (after 1990) says transitions are at 0:00. # Go with IATA starting in 1995, except correct 1995 entry from 09-30 to 09-29. # From Alexander Krivenyshev (2011-04-20): # "...Egypt's interim cabinet decided on Wednesday to cancel daylight # saving time after a poll posted on its website showed the majority of # Egyptians would approve the cancellation." # # Egypt to cancel daylight saving time # http://www.almasryalyoum.com/en/node/407168 # or # http://www.worldtimezone.com/dst_news/dst_news_egypt04.html Rule Egypt 1995 2010 - Apr lastFri 0:00s 1:00 S Rule Egypt 1995 2005 - Sep lastThu 24:00 0 - # From Steffen Thorsen (2006-09-19): # The Egyptian Gazette, issue 41,090 (2006-09-18), page 1, reports: # Egypt will turn back clocks by one hour at the midnight of Thursday # after observing the daylight saving time since May. # http://news.gom.com.eg/gazette/pdf/2006/09/18/01.pdf Rule Egypt 2006 only - Sep 21 24:00 0 - # From Dirk Losch (2007-08-14): # I received a mail from an airline which says that the daylight # saving time in Egypt will end in the night of 2007-09-06 to 2007-09-07. # From Jesper Nørgaard Welen (2007-08-15): [The following agree:] # http://www.nentjes.info/Bill/bill5.htm # http://www.timeanddate.com/worldclock/city.html?n=53 # From Steffen Thorsen (2007-09-04): The official information...: # http://www.sis.gov.eg/En/EgyptOnline/Miscellaneous/000002/0207000000000000001580.htm Rule Egypt 2007 only - Sep Thu>=1 24:00 0 - # From Abdelrahman Hassan (2007-09-06): # Due to the Hijri (lunar Islamic calendar) year being 11 days shorter # than the year of the Gregorian calendar, Ramadan shifts earlier each # year. This year it will be observed September 13 (September is quite # hot in Egypt), and the idea is to make fasting easier for workers by # shifting business hours one hour out of daytime heat. Consequently, # unless discontinued, next DST may end Thursday 28 August 2008. # From Paul Eggert (2007-08-17): # For lack of better info, assume the new rule is last Thursday in August. # From Petr Machata (2009-04-06): # The following appeared in Red Hat bugzilla[1] (edited): # # > $ zdump -v /usr/share/zoneinfo/Africa/Cairo | grep 2009 # > /usr/share/zoneinfo/Africa/Cairo Thu Apr 23 21:59:59 2009 UTC = Thu = # Apr 23 # > 23:59:59 2009 EET isdst=0 gmtoff=7200 # > /usr/share/zoneinfo/Africa/Cairo Thu Apr 23 22:00:00 2009 UTC = Fri = # Apr 24 # > 01:00:00 2009 EEST isdst=1 gmtoff=10800 # > /usr/share/zoneinfo/Africa/Cairo Thu Aug 27 20:59:59 2009 UTC = Thu = # Aug 27 # > 23:59:59 2009 EEST isdst=1 gmtoff=10800 # > /usr/share/zoneinfo/Africa/Cairo Thu Aug 27 21:00:00 2009 UTC = Thu = # Aug 27 # > 23:00:00 2009 EET isdst=0 gmtoff=7200 # # > end date should be Thu Sep 24 2009 (Last Thursday in September at 23:59= # :59) # > http://support.microsoft.com/kb/958729/ # # timeanddate[2] and another site I've found[3] also support that. # # [1] https://bugzilla.redhat.com/show_bug.cgi?id=492263 # [2] http://www.timeanddate.com/worldclock/clockchange.html?n=53 # [3] http://wwp.greenwichmeantime.com/time-zone/africa/egypt/ # From Arthur David Olson (2009-04-20): # In 2009 (and for the next several years), Ramadan ends before the fourth # Thursday in September; Egypt is expected to revert to the last Thursday # in September. # From Steffen Thorsen (2009-08-11): # We have been able to confirm the August change with the Egyptian Cabinet # Information and Decision Support Center: # http://www.timeanddate.com/news/time/egypt-dst-ends-2009.html # # The Middle East News Agency # http://www.mena.org.eg/index.aspx # also reports "Egypt starts winter time on August 21" # today in article numbered "71, 11/08/2009 12:25 GMT." # Only the title above is available without a subscription to their service, # and can be found by searching for "winter" in their search engine # (at least today). # From Alexander Krivenyshev (2010-07-20): # According to News from Egypt - Al-Masry Al-Youm Egypt's cabinet has # decided that Daylight Saving Time will not be used in Egypt during # Ramadan. # # Arabic translation: # "Clocks to go back during Ramadan - and then forward again" # http://www.almasryalyoum.com/en/news/clocks-go-back-during-ramadan-and-then-forward-again # http://www.worldtimezone.com/dst_news/dst_news_egypt02.html # From Ahmad El-Dardiry (2014-05-07): # Egypt is to change back to Daylight system on May 15 # http://english.ahram.org.eg/NewsContent/1/64/100735/Egypt/Politics-/Egypts-government-to-reapply-daylight-saving-time-.aspx # From Gunther Vermier (2014-05-13): # our Egypt office confirms that the change will be at 15 May "midnight" (24:00) # From Imed Chihi (2014-06-04): # We have finally "located" a precise official reference about the DST changes # in Egypt. The Ministers Cabinet decision is explained at # http://www.cabinet.gov.eg/Media/CabinetMeetingsDetails.aspx?id=347 ... # [T]his (Arabic) site is not accessible outside Egypt, but the page ... # translates into: "With regard to daylight saving time, it is scheduled to # take effect at exactly twelve o'clock this evening, Thursday, 15 MAY 2014, # to be suspended by twelve o'clock on the evening of Thursday, 26 JUN 2014, # and re-established again at the end of the month of Ramadan, at twelve # o'clock on the evening of Thursday, 31 JUL 2014." This statement has been # reproduced by other (more accessible) sites[, e.g.,]... # http://elgornal.net/news/news.aspx?id=4699258 # From Paul Eggert (2014-06-04): # Sarah El Deeb and Lee Keath of AP report that the Egyptian government says # the change is because of blackouts in Cairo, even though Ahram Online (cited # above) says DST had no affect on electricity consumption. There is # no information about when DST will end this fall. See: # http://abcnews.go.com/International/wireStory/el-sissi-pushes-egyptians-line-23614833 -# + +# From Steffen Thorsen (2015-04-08): +# Egypt will start DST on midnight after Thursday, April 30, 2015. +# This is based on a law (no 35) from May 15, 2014 saying it starts the last +# Thursday of April.... Clocks will still be turned back for Ramadan, but +# dates not yet announced.... +# http://almogaz.com/news/weird-news/2015/04/05/1947105 ... +# http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html + +# From Paul Eggert (2015-04-08): # For now, guess that later spring and fall transitions will use -# 2010's rules, and guess that Egypt will switch to standard time at +# 2014's rules, and guess that Egypt will switch to standard time at # 24:00 the last Thursday before Ramadan, and back to DST at 00:00 the # first Friday after Ramadan. To implement this, # transition dates for 2015 through 2037 were determined by running -# the following program under GNU Emacs 24.3, with the results integrated +# the following program under GNU Emacs 24.4, with the results integrated # by hand into the table below. Ramadan again intrudes on the guessed # DST starting in 2038, but that's beyond our somewhat-arbitrary cutoff. # (let ((islamic-year 1436)) # (while (< islamic-year 1460) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) # (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) # (friday 5)) # (while (/= friday (mod a 7)) # (setq a (1- a))) # (while (/= friday (mod b 7)) # (setq b (1+ b))) # (setq a (1- a)) # (setq b (1- b)) # (setq a (calendar-gregorian-from-absolute a)) # (setq b (calendar-gregorian-from-absolute b)) # (insert # (format # (concat "Rule\tEgypt\t%d\tonly\t-\t%s\t%2d\t24:00\t0\t-\n" # "Rule\tEgypt\t%d\tonly\t-\t%s\t%2d\t24:00\t1:00\tS\n") # (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) # (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) # (setq islamic-year (+ 1 islamic-year)))) Rule Egypt 2008 only - Aug lastThu 24:00 0 - Rule Egypt 2009 only - Aug 20 24:00 0 - Rule Egypt 2010 only - Aug 10 24:00 0 - Rule Egypt 2010 only - Sep 9 24:00 1:00 S Rule Egypt 2010 only - Sep lastThu 24:00 0 - Rule Egypt 2014 only - May 15 24:00 1:00 S Rule Egypt 2014 only - Jun 26 24:00 0 - Rule Egypt 2014 only - Jul 31 24:00 1:00 S Rule Egypt 2014 max - Sep lastThu 24:00 0 - -Rule Egypt 2015 2019 - Apr lastFri 0:00s 1:00 S +Rule Egypt 2015 2019 - Apr lastThu 24:00 1:00 S Rule Egypt 2015 only - Jun 11 24:00 0 - Rule Egypt 2015 only - Jul 23 24:00 1:00 S Rule Egypt 2016 only - Jun 2 24:00 0 - Rule Egypt 2016 only - Jul 7 24:00 1:00 S Rule Egypt 2017 only - May 25 24:00 0 - Rule Egypt 2017 only - Jun 29 24:00 1:00 S Rule Egypt 2018 only - May 10 24:00 0 - Rule Egypt 2018 only - Jun 14 24:00 1:00 S Rule Egypt 2019 only - May 2 24:00 0 - Rule Egypt 2019 only - Jun 6 24:00 1:00 S Rule Egypt 2020 only - May 28 24:00 1:00 S Rule Egypt 2021 only - May 13 24:00 1:00 S Rule Egypt 2022 only - May 5 24:00 1:00 S -Rule Egypt 2023 max - Apr lastFri 0:00s 1:00 S +Rule Egypt 2023 max - Apr lastThu 24:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:09 - LMT 1900 Oct 2:00 Egypt EE%sT # Equatorial Guinea # See Africa/Lagos. # Eritrea # Ethiopia # See Africa/Nairobi. # Gabon # See Africa/Lagos. # Gambia # See Africa/Abidjan. # Ghana # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Whitman says DST was observed from 1931 to "the present"; # Shanks & Pottenger say 1936 to 1942; # and September 1 to January 1 is given by: # Scott Keltie J, Epstein M (eds), The Statesman's Year-Book, # 57th ed. Macmillan, London (1920), OCLC 609408015, pp xxviii. # For lack of better info, assume DST was observed from 1920 to 1942. Rule Ghana 1920 1942 - Sep 1 0:00 0:20 GHST Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Accra -0:00:52 - LMT 1918 0:00 Ghana %s # Guinea # See Africa/Abidjan. # Guinea-Bissau # # Shanks gives 1911-05-26 for the transition to WAT, # evidently confusing the date of the Portuguese decree # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf # with the date that it took effect, namely 1912-01-01. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 -1:00 - WAT 1975 0:00 - GMT # Kenya # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - BEAT 1940 2:45 - BEAUT 1960 3:00 - EAT Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia Link Africa/Nairobi Africa/Asmara # Eritrea Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania Link Africa/Nairobi Africa/Djibouti Link Africa/Nairobi Africa/Kampala # Uganda Link Africa/Nairobi Africa/Mogadishu # Somalia Link Africa/Nairobi Indian/Antananarivo # Madagascar Link Africa/Nairobi Indian/Comoro Link Africa/Nairobi Indian/Mayotte # Lesotho # See Africa/Johannesburg. # Liberia # From Paul Eggert (2006-03-22): # In 1972 Liberia was the last country to switch # from a UTC offset that was not a multiple of 15 or 20 minutes. # Howse reports that it was in honor of their president's birthday. # Shank & Pottenger report the date as May 1, whereas Howse reports Jan; # go with Shanks & Pottenger. # For Liberia before 1972, Shanks & Pottenger report -0:44, whereas Howse and # Whitman each report -0:44:30; go with the more precise figure. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Monrovia -0:43:08 - LMT 1882 -0:43:08 - MMT 1919 Mar # Monrovia Mean Time -0:44:30 - LRT 1972 May # Liberia Time 0:00 - GMT ############################################################################### # Libya # From Even Scharning (2012-11-10): # Libya set their time one hour back at 02:00 on Saturday November 10. # http://www.libyaherald.com/2012/11/04/clocks-to-go-back-an-hour-on-saturday/ # Here is an official source [in Arabic]: http://ls.ly/fb6Yc # # Steffen Thorsen forwarded a translation (2012-11-10) in # http://mm.icann.org/pipermail/tz/2012-November/018451.html # # From Tim Parenti (2012-11-11): # Treat the 2012-11-10 change as a zone change from UTC+2 to UTC+1. # The DST rules planned for 2013 and onward roughly mirror those of Europe # (either two days before them or five days after them, so as to fall on # lastFri instead of lastSun). # From Even Scharning (2013-10-25): # The scheduled end of DST in Libya on Friday, October 25, 2013 was # cancelled yesterday.... # http://www.libyaherald.com/2013/10/24/correction-no-time-change-tomorrow/ # # From Paul Eggert (2013-10-25): # For now, assume they're reverting to the pre-2012 rules of permanent UTC+2. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Libya 1951 only - Oct 14 2:00 1:00 S Rule Libya 1952 only - Jan 1 0:00 0 - Rule Libya 1953 only - Oct 9 2:00 1:00 S Rule Libya 1954 only - Jan 1 0:00 0 - Rule Libya 1955 only - Sep 30 0:00 1:00 S Rule Libya 1956 only - Jan 1 0:00 0 - Rule Libya 1982 1984 - Apr 1 0:00 1:00 S Rule Libya 1982 1985 - Oct 1 0:00 0 - Rule Libya 1985 only - Apr 6 0:00 1:00 S Rule Libya 1986 only - Apr 4 0:00 1:00 S Rule Libya 1986 only - Oct 3 0:00 0 - Rule Libya 1987 1989 - Apr 1 0:00 1:00 S Rule Libya 1987 1989 - Oct 1 0:00 0 - Rule Libya 1997 only - Apr 4 0:00 1:00 S Rule Libya 1997 only - Oct 4 0:00 0 - Rule Libya 2013 only - Mar lastFri 1:00 1:00 S Rule Libya 2013 only - Oct lastFri 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Tripoli 0:52:44 - LMT 1920 1:00 Libya CE%sT 1959 2:00 - EET 1982 1:00 Libya CE%sT 1990 May 4 # The 1996 and 1997 entries are from Shanks & Pottenger; # the IATA SSIM data entries contain some obvious errors. 2:00 - EET 1996 Sep 30 1:00 Libya CE%sT 1997 Oct 4 2:00 - EET 2012 Nov 10 2:00 1:00 Libya CE%sT 2013 Oct 25 2:00 2:00 - EET # Madagascar # See Africa/Nairobi. # Malawi # See Africa/Maputo. # Mali # Mauritania # See Africa/Abidjan. # Mauritius # From Steffen Thorsen (2008-06-25): # Mauritius plans to observe DST from 2008-11-01 to 2009-03-31 on a trial # basis.... # It seems that Mauritius observed daylight saving time from 1982-10-10 to # 1983-03-20 as well, but that was not successful.... # http://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html # From Alex Krivenyshev (2008-06-25): # http://economicdevelopment.gov.mu/portal/site/Mainhomepage/menuitem.a42b24128104d9845dabddd154508a0c/?content_id=0a7cee8b5d69a110VgnVCM1000000a04a8c0RCRD # From Arthur David Olson (2008-06-30): # The www.timeanddate.com article cited by Steffen Thorsen notes that "A # final decision has yet to be made on the times that daylight saving # would begin and end on these dates." As a place holder, use midnight. # From Paul Eggert (2008-06-30): # Follow Thorsen on DST in 1982/1983, instead of Shanks & Pottenger. # From Steffen Thorsen (2008-07-10): # According to # http://www.lexpress.mu/display_article.php?news_id=111216 # (in French), Mauritius will start and end their DST a few days earlier # than previously announced (2008-11-01 to 2009-03-31). The new start # date is 2008-10-26 at 02:00 and the new end date is 2009-03-27 (no time # given, but it is probably at either 2 or 3 wall clock time). # # A little strange though, since the article says that they moved the date # to align itself with Europe and USA which also change time on that date, # but that means they have not paid attention to what happened in # USA/Canada last year (DST ends first Sunday in November). I also wonder # why that they end on a Friday, instead of aligning with Europe which # changes two days later. # From Alex Krivenyshev (2008-07-11): # Seems that English language article "The revival of daylight saving # time: Energy conservation?"-# No. 16578 (07/11/2008) was originally # published on Monday, June 30, 2008... # # I guess that article in French "Le gouvernement avance l'introduction # de l'heure d'été" stating that DST in Mauritius starting on October 26 # and ending on March 27, 2009 is the most recent one.... # http://www.worldtimezone.com/dst_news/dst_news_mauritius02.html # From Riad M. Hossen Ally (2008-08-03): # The Government of Mauritius weblink # http://www.gov.mu/portal/site/pmosite/menuitem.4ca0efdee47462e7440a600248a521ca/?content_id=4728ca68b2a5b110VgnVCM1000000a04a8c0RCRD # Cabinet Decision of July 18th, 2008 states as follows: # # 4. ...Cabinet has agreed to the introduction into the National Assembly # of the Time Bill which provides for the introduction of summer time in # Mauritius. The summer time period which will be of one hour ahead of # the standard time, will be aligned with that in Europe and the United # States of America. It will start at two o'clock in the morning on the # last Sunday of October and will end at two o'clock in the morning on # the last Sunday of March the following year. The summer time for the # year 2008-2009 will, therefore, be effective as from 26 October 2008 # and end on 29 March 2009. # From Ed Maste (2008-10-07): # THE TIME BILL (No. XXVII of 2008) Explanatory Memorandum states the # beginning / ending of summer time is 2 o'clock standard time in the # morning of the last Sunday of October / last Sunday of March. # http://www.gov.mu/portal/goc/assemblysite/file/bill2708.pdf # From Steffen Thorsen (2009-06-05): # According to several sources, Mauritius will not continue to observe # DST the coming summer... # # Some sources, in French: # http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heure-d%E2%80%99%C3%A9t%C3%A9-ne-sera-pas-appliqu%C3%A9e-cette-ann%C3%A9e-%C2%BB # http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-%C3%A9nergie-de-l-heure-d-%C3%A9t%C3%A9-ont-%C3%A9t%C3%A9-atteints- # # Our wrap-up: # http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html # From Arthur David Olson (2009-07-11): # The "mauritius-dst-will-not-repeat" wrapup includes this: # "The trial ended on March 29, 2009, when the clocks moved back by one hour # at 2am (or 02:00) local time..." # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mauritius 1982 only - Oct 10 0:00 1:00 S Rule Mauritius 1983 only - Mar 21 0:00 0 - Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S Rule Mauritius 2009 only - Mar lastSun 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis 4:00 Mauritius MU%sT # Mauritius Time # Agalega Is, Rodriguez # no information; probably like Indian/Mauritius # Mayotte # See Africa/Nairobi. # Morocco # See the 'europe' file for Spanish Morocco (Africa/Ceuta). # From Alex Krivenyshev (2008-05-09): # Here is an article that Morocco plan to introduce Daylight Saving Time between # 1 June, 2008 and 27 September, 2008. # # "... Morocco is to save energy by adjusting its clock during summer so it will # be one hour ahead of GMT between 1 June and 27 September, according to # Communication Minister and Government Spokesman, Khalid Naciri...." # # http://www.worldtimezone.net/dst_news/dst_news_morocco01.html # http://en.afrik.com/news11892.html # From Alex Krivenyshev (2008-05-09): # The Morocco time change can be confirmed on Morocco web site Maghreb Arabe # Presse: # http://www.map.ma/eng/sections/box3/morocco_shifts_to_da/view # # Morocco shifts to daylight time on June 1st through September 27, Govt. # spokesman. # From Patrice Scattolin (2008-05-09): # According to this article: # http://www.avmaroc.com/actualite/heure-dete-comment-a127896.html # (and republished here: ) # the changes occur at midnight: # # Saturday night May 31st at midnight (which in French is to be # interpreted as the night between Saturday and Sunday) # Sunday night the 28th at midnight # # Seeing that the 28th is Monday, I am guessing that she intends to say # the midnight of the 28th which is the midnight between Sunday and # Monday, which jives with other sources that say that it's inclusive # June 1st to Sept 27th. # # The decision was taken by decree *2-08-224 *but I can't find the decree # published on the web. # # It's also confirmed here: # http://www.maroc.ma/NR/exeres/FACF141F-D910-44B0-B7FA-6E03733425D1.htm # on a government portal as being between June 1st and Sept 27th (not yet # posted in English). # # The following Google query will generate many relevant hits: # http://www.google.com/search?hl=en&q=Conseil+de+gouvernement+maroc+heure+avance&btnG=Search # From Steffen Thorsen (2008-08-27): # Morocco will change the clocks back on the midnight between August 31 # and September 1. They originally planned to observe DST to near the end # of September: # # One article about it (in French): # http://www.menara.ma/fr/Actualites/Maroc/Societe/ci.retour_a_l_heure_gmt_a_partir_du_dimanche_31_aout_a_minuit_officiel_.default # # We have some further details posted here: # http://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html # From Steffen Thorsen (2009-03-17): # Morocco will observe DST from 2009-06-01 00:00 to 2009-08-21 00:00 according # to many sources, such as # http://news.marweb.com/morocco/entertainment/morocco-daylight-saving.html # http://www.medi1sat.ma/fr/depeche.aspx?idp=2312 # (French) # # Our summary: # http://www.timeanddate.com/news/time/morocco-starts-dst-2009.html # From Alexander Krivenyshev (2009-03-17): # Here is a link to official document from Royaume du Maroc Premier Ministre, # Ministère de la Modernisation des Secteurs Publics # # Under Article 1 of Royal Decree No. 455-67 of Act 23 safar 1387 (2 june 1967) # concerning the amendment of the legal time, the Ministry of Modernization of # Public Sectors announced that the official time in the Kingdom will be # advanced 60 minutes from Sunday 31 May 2009 at midnight. # # http://www.mmsp.gov.ma/francais/Actualites_fr/PDF_Actualites_Fr/HeureEte_FR.pdf # http://www.worldtimezone.com/dst_news/dst_news_morocco03.html # From Steffen Thorsen (2010-04-13): # Several news media in Morocco report that the Ministry of Modernization # of Public Sectors has announced that Morocco will have DST from # 2010-05-02 to 2010-08-08. # # Example: # http://www.lavieeco.com/actualites/4099-le-maroc-passera-a-l-heure-d-ete-gmt1-le-2-mai.html # (French) # Our page: # http://www.timeanddate.com/news/time/morocco-starts-dst-2010.html # From Dan Abitol (2011-03-30): # ...Rules for Africa/Casablanca are the following (24h format) # The 3rd April 2011 at 00:00:00, [it] will be 3rd April 01:00:00 # The 31st July 2011 at 00:59:59, [it] will be 31st July 00:00:00 # ...Official links of change in morocco # The change was broadcast on the FM Radio # I ve called ANRT (telecom regulations in Morocco) at # +212.537.71.84.00 # http://www.anrt.net.ma/fr/ # They said that # http://www.map.ma/fr/sections/accueil/l_heure_legale_au_ma/view # is the official publication to look at. # They said that the decision was already taken. # # More articles in the press # http://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html # http://www.lematin.ma/Actualite/Express/Article.asp?id=148923 # http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT%2B1-a-partir-de-dim # From Petr Machata (2011-03-30): # They have it written in English here: # http://www.map.ma/eng/sections/home/morocco_to_spring_fo/view # # It says there that "Morocco will resume its standard time on July 31, # 2011 at midnight." Now they don't say whether they mean midnight of # wall clock time (i.e. 11pm UTC), but that's what I would assume. It has # also been like that in the past. # From Alexander Krivenyshev (2012-03-09): # According to Infomédiaire web site from Morocco (infomediaire.ma), # on March 9, 2012, (in French) Heure légale: # Le Maroc adopte officiellement l'heure d'été # http://www.infomediaire.ma/news/maroc/heure-l%C3%A9gale-le-maroc-adopte-officiellement-lheure-d%C3%A9t%C3%A9 # Governing Council adopted draft decree, that Morocco DST starts on # the last Sunday of March (March 25, 2012) and ends on # last Sunday of September (September 30, 2012) # except the month of Ramadan. # or (brief) # http://www.worldtimezone.com/dst_news/dst_news_morocco06.html # From Arthur David Olson (2012-03-10): # The infomediaire.ma source indicates that the system is to be in # effect every year. It gives 03H00 as the "fall back" time of day; # it lacks a "spring forward" time of day; assume 2:00 XXX. # Wait on specifying the Ramadan exception for details about # start date, start time of day, end date, and end time of day XXX. # From Christophe Tropamer (2012-03-16): # Seen Morocco change again: # http://www.le2uminutes.com/actualite.php # "...à partir du dernier dimanche d'avril et non fins mars, # comme annoncé précédemment." # From Milamber Space Network (2012-07-17): # The official return to GMT is announced by the Moroccan government: # http://www.mmsp.gov.ma/fr/actualites.aspx?id=288 [in French] # # Google translation, lightly edited: # Back to the standard time of the Kingdom (GMT) # Pursuant to Decree No. 2-12-126 issued on 26 Jumada (I) 1433 (April 18, # 2012) and in accordance with the order of Mr. President of the # Government No. 3-47-12 issued on 24 Sha'ban (11 July 2012), the Ministry # of Public Service and Administration Modernization announces the return # of the legal time of the Kingdom (GMT) from Friday, July 20, 2012 until # Monday, August 20, 2012. So the time will be delayed by 60 minutes from # 3:00 am Friday, July 20, 2012 and will again be advanced by 60 minutes # August 20, 2012 from 2:00 am. # From Paul Eggert (2013-03-06): # Morocco's daylight-saving transitions due to Ramadan seem to be # announced a bit in advance. On 2012-07-11 the Moroccan government # announced that year's Ramadan daylight-saving transitions would be # 2012-07-20 and 2012-08-20; see # http://www.mmsp.gov.ma/fr/actualites.aspx?id=288 # From Andrew Paprocki (2013-07-02): # Morocco announced that the year's Ramadan daylight-savings # transitions would be 2013-07-07 and 2013-08-10; see: # http://www.maroc.ma/en/news/morocco-suspends-daylight-saving-time-july-7-aug10 # From Steffen Thorsen (2013-09-28): # Morocco extends DST by one month, on very short notice, just 1 day # before it was going to end. There is a new decree (2.13.781) for # this, where DST from now on goes from last Sunday of March at 02:00 # to last Sunday of October at 03:00, similar to EU rules. Official # source (French): # http://www.maroc.gov.ma/fr/actualites/lhoraire-dete-gmt1-maintenu-jusquau-27-octobre-2013 # Another source (specifying the time for start and end in the decree): # http://www.lemag.ma/Heure-d-ete-au-Maroc-jusqu-au-27-octobre_a75620.html # From Sebastien Willemijns (2014-03-18): # http://www.afriquinfos.com/articles/2014/3/18/maroc-heure-dete-avancez-tous-horloges-247891.asp # From Milamber Space Network (2014-06-05): # The Moroccan government has recently announced that the country will return # to standard time at 03:00 on Saturday, June 28, 2014 local time.... DST # will resume again at 02:00 on Saturday, August 2, 2014.... # http://www.mmsp.gov.ma/fr/actualites.aspx?id=586 # From Paul Eggert (2014-06-05): # For now, guess that later spring and fall transitions will use 2014's rules, # and guess that Morocco will switch to standard time at 03:00 the last # Saturday before Ramadan, and back to DST at 02:00 the first Saturday after # Ramadan. To implement this, transition dates for 2015 through 2037 were # determined by running the following program under GNU Emacs 24.3, with the # results integrated by hand into the table below. # (let ((islamic-year 1436)) # (while (< islamic-year 1460) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) # (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) # (saturday 6)) # (while (/= saturday (mod (setq a (1- a)) 7))) # (while (/= saturday (mod b 7)) # (setq b (1+ b))) # (setq a (calendar-gregorian-from-absolute a)) # (setq b (calendar-gregorian-from-absolute b)) # (insert # (format # (concat "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t0\t-\n" # "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t1:00\tS\n") # (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) # (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) # (setq islamic-year (+ 1 islamic-year)))) # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 S Rule Morocco 1939 only - Nov 19 0:00 0 - Rule Morocco 1940 only - Feb 25 0:00 1:00 S Rule Morocco 1945 only - Nov 18 0:00 0 - Rule Morocco 1950 only - Jun 11 0:00 1:00 S Rule Morocco 1950 only - Oct 29 0:00 0 - Rule Morocco 1967 only - Jun 3 12:00 1:00 S Rule Morocco 1967 only - Oct 1 0:00 0 - Rule Morocco 1974 only - Jun 24 0:00 1:00 S Rule Morocco 1974 only - Sep 1 0:00 0 - Rule Morocco 1976 1977 - May 1 0:00 1:00 S Rule Morocco 1976 only - Aug 1 0:00 0 - Rule Morocco 1977 only - Sep 28 0:00 0 - Rule Morocco 1978 only - Jun 1 0:00 1:00 S Rule Morocco 1978 only - Aug 4 0:00 0 - Rule Morocco 2008 only - Jun 1 0:00 1:00 S Rule Morocco 2008 only - Sep 1 0:00 0 - Rule Morocco 2009 only - Jun 1 0:00 1:00 S Rule Morocco 2009 only - Aug 21 0:00 0 - Rule Morocco 2010 only - May 2 0:00 1:00 S Rule Morocco 2010 only - Aug 8 0:00 0 - Rule Morocco 2011 only - Apr 3 0:00 1:00 S Rule Morocco 2011 only - Jul 31 0 0 - Rule Morocco 2012 2013 - Apr lastSun 2:00 1:00 S Rule Morocco 2012 only - Sep 30 3:00 0 - Rule Morocco 2012 only - Jul 20 3:00 0 - Rule Morocco 2012 only - Aug 20 2:00 1:00 S Rule Morocco 2013 only - Jul 7 3:00 0 - Rule Morocco 2013 only - Aug 10 2:00 1:00 S Rule Morocco 2013 max - Oct lastSun 3:00 0 - Rule Morocco 2014 2022 - Mar lastSun 2:00 1:00 S Rule Morocco 2014 only - Jun 28 3:00 0 - Rule Morocco 2014 only - Aug 2 2:00 1:00 S Rule Morocco 2015 only - Jun 13 3:00 0 - Rule Morocco 2015 only - Jul 18 2:00 1:00 S Rule Morocco 2016 only - Jun 4 3:00 0 - Rule Morocco 2016 only - Jul 9 2:00 1:00 S Rule Morocco 2017 only - May 20 3:00 0 - Rule Morocco 2017 only - Jul 1 2:00 1:00 S Rule Morocco 2018 only - May 12 3:00 0 - Rule Morocco 2018 only - Jun 16 2:00 1:00 S Rule Morocco 2019 only - May 4 3:00 0 - Rule Morocco 2019 only - Jun 8 2:00 1:00 S Rule Morocco 2020 only - Apr 18 3:00 0 - Rule Morocco 2020 only - May 30 2:00 1:00 S Rule Morocco 2021 only - Apr 10 3:00 0 - Rule Morocco 2021 only - May 15 2:00 1:00 S Rule Morocco 2022 only - Apr 2 3:00 0 - Rule Morocco 2022 only - May 7 2:00 1:00 S Rule Morocco 2023 only - Apr 22 2:00 1:00 S Rule Morocco 2024 only - Apr 13 2:00 1:00 S Rule Morocco 2025 only - Apr 5 2:00 1:00 S Rule Morocco 2026 max - Mar lastSun 2:00 1:00 S Rule Morocco 2035 only - Oct 27 3:00 0 - Rule Morocco 2036 only - Oct 18 3:00 0 - Rule Morocco 2037 only - Oct 10 3:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 0:00 Morocco WE%sT 1984 Mar 16 1:00 - CET 1986 0:00 Morocco WE%sT # Western Sahara # # From Gwillim Law (2013-10-22): # A correspondent who is usually well informed about time zone matters # ... says that Western Sahara observes daylight saving time, just as # Morocco does. # # From Paul Eggert (2013-10-23): # Assume that this has been true since Western Sahara switched to GMT, # since most of it was then controlled by Morocco. Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún -1:00 - WAT 1976 Apr 14 0:00 Morocco WE%sT # Mozambique # # Shanks gives 1903-03-01 for the transition to CAT. # Perhaps the 1911-05-26 Portuguese decree # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf # merely made it official? # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Maputo 2:10:20 - LMT 1903 Mar 2:00 - CAT Link Africa/Maputo Africa/Blantyre # Malawi Link Africa/Maputo Africa/Bujumbura # Burundi Link Africa/Maputo Africa/Gaborone # Botswana Link Africa/Maputo Africa/Harare # Zimbabwe Link Africa/Maputo Africa/Kigali # Rwanda Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo Link Africa/Maputo Africa/Lusaka # Zambia # Namibia # The 1994-04-03 transition is from Shanks & Pottenger. # Shanks & Pottenger report no DST after 1998-04; go with IATA. # From Petronella Sibeene (2007-03-30): # http://allafrica.com/stories/200703300178.html # While the entire country changes its time, Katima Mulilo and other # settlements in Caprivi unofficially will not because the sun there # rises and sets earlier compared to other regions. Chief of # Forecasting Riaan van Zyl explained that the far eastern parts of # the country are close to 40 minutes earlier in sunrise than the rest # of the country. # # From Paul Eggert (2007-03-31): # Apparently the Caprivi Strip informally observes Botswana time, but # we have no details. In the meantime people there can use Africa/Gaborone. # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S Rule Namibia 1995 max - Apr Sun>=1 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 1:30 - SWAT 1903 Mar # SW Africa Time 2:00 - SAST 1942 Sep 20 2:00 2:00 1:00 SAST 1943 Mar 21 2:00 2:00 - SAST 1990 Mar 21 # independence 2:00 - CAT 1994 Apr 3 1:00 Namibia WA%sT # Niger # See Africa/Lagos. # Nigeria # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Lagos 0:13:36 - LMT 1919 Sep 1:00 - WAT Link Africa/Lagos Africa/Bangui # Central African Republic Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo Link Africa/Lagos Africa/Douala # Cameroon Link Africa/Lagos Africa/Kinshasa # Dem. Rep. of the Congo (west) Link Africa/Lagos Africa/Libreville # Gabon Link Africa/Lagos Africa/Luanda # Angola Link Africa/Lagos Africa/Malabo # Equatorial Guinea Link Africa/Lagos Africa/Niamey # Niger Link Africa/Lagos Africa/Porto-Novo # Benin # Réunion # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis 4:00 - RET # Réunion Time # # Crozet Islands also observes Réunion time; see the 'antarctica' file. # # Scattered Islands (Îles Éparses) administered from Réunion are as follows. # The following information about them is taken from # Îles Éparses (, 1997-07-22, # in French; no longer available as of 1999-08-17). # We have no info about their time zone histories. # # Bassas da India - uninhabited # Europa Island - inhabited from 1905 to 1910 by two families # Glorioso Is - inhabited until at least 1958 # Juan de Nova - uninhabited # Tromelin - inhabited until at least 1958 # Rwanda # See Africa/Maputo. # St Helena # See Africa/Abidjan. # The other parts of the St Helena territory are similar: # Tristan da Cunha: on GMT, say Whitman and the CIA # Ascension: on GMT, say the USNO (1995-12-21) and the CIA # Gough (scientific station since 1955; sealers wintered previously): # on GMT, says the CIA # Inaccessible, Nightingale: uninhabited # São Tomé and Príncipe # Senegal # See Africa/Abidjan. # Seychelles # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria 4:00 - SCT # Seychelles Time # From Paul Eggert (2001-05-30): # Aldabra, Farquhar, and Desroches, originally dependencies of the # Seychelles, were transferred to the British Indian Ocean Territory # in 1965 and returned to Seychelles control in 1976. We don't know # whether this affected their time zone, so omit this for now. # Possibly the islands were uninhabited. # Sierra Leone # See Africa/Abidjan. # Somalia # See Africa/Nairobi. # South Africa # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule SA 1942 1943 - Sep Sun>=15 2:00 1:00 - Rule SA 1943 1944 - Mar Sun>=15 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8 1:30 - SAST 1903 Mar 2:00 SA SAST Link Africa/Johannesburg Africa/Maseru # Lesotho Link Africa/Johannesburg Africa/Mbabane # Swaziland # # Marion and Prince Edward Is # scientific station since 1947 # no information # Sudan # # From # Sudan News Agency (2000-01-13), # also reported by Michaël De Beukelaer-Dossche via Steffen Thorsen: # Clocks will be moved ahead for 60 minutes all over the Sudan as of noon # Saturday.... This was announced Thursday by Caretaker State Minister for # Manpower Abdul-Rahman Nur-Eddin. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Sudan 1970 only - May 1 0:00 1:00 S Rule Sudan 1970 1985 - Oct 15 0:00 0 - Rule Sudan 1971 only - Apr 30 0:00 1:00 S Rule Sudan 1972 1985 - Apr lastSun 0:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Khartoum 2:10:08 - LMT 1931 2:00 Sudan CA%sT 2000 Jan 15 12:00 3:00 - EAT # South Sudan Link Africa/Khartoum Africa/Juba # Swaziland # See Africa/Johannesburg. # Tanzania # See Africa/Nairobi. # Togo # See Africa/Abidjan. # Tunisia # From Gwillim Law (2005-04-30): # My correspondent, Risto Nykänen, has alerted me to another adoption of DST, # this time in Tunisia. According to Yahoo France News # , in a story attributed to AP # and dated 2005-04-26, "Tunisia has decided to advance its official time by # one hour, starting on Sunday, May 1. Henceforth, Tunisian time will be # UTC+2 instead of UTC+1. The change will take place at 23:00 UTC next # Saturday." (My translation) # # From Oscar van Vlijmen (2005-05-02): # La Presse, the first national daily newspaper ... # http://www.lapresse.tn/archives/archives280405/actualites/lheure.html # ... DST for 2005: on: Sun May 1 0h standard time, off: Fri Sept. 30, # 1h standard time. # # From Atef Loukil (2006-03-28): # The daylight saving time will be the same each year: # Beginning : the last Sunday of March at 02:00 # Ending : the last Sunday of October at 03:00 ... # http://www.tap.info.tn/en/index.php?option=com_content&task=view&id=1188&Itemid=50 # From Steffen Thorsen (2009-03-16): # According to several news sources, Tunisia will not observe DST this year. # (Arabic) # http://www.elbashayer.com/?page=viewn&nid=42546 # http://www.babnet.net/kiwidetail-15295.asp # # We have also confirmed this with the US embassy in Tunisia. # We have a wrap-up about this on the following page: # http://www.timeanddate.com/news/time/tunisia-cancels-dst-2009.html # From Alexander Krivenyshev (2009-03-17): # Here is a link to Tunis Afrique Presse News Agency # # Standard time to be kept the whole year long (tap.info.tn): # # (in English) # http://www.tap.info.tn/en/index.php?option=com_content&task=view&id=26813&Itemid=157 # # (in Arabic) # http://www.tap.info.tn/ar/index.php?option=com_content&task=view&id=61240&Itemid=1 # From Arthur David Olson (2009-03-18): # The Tunis Afrique Presse News Agency notice contains this: "This measure is # due to the fact that the fasting month of Ramadan coincides with the period # concerned by summer time. Therefore, the standard time will be kept # unchanged the whole year long." So foregoing DST seems to be an exception # (albeit one that may be repeated in the future). # From Alexander Krivenyshev (2010-03-27): # According to some news reports Tunis confirmed not to use DST in 2010 # # (translation): # "The Tunisian government has decided to abandon DST, which was scheduled on # Sunday... # Tunisian authorities had suspended the DST for the first time last year also # coincided with the month of Ramadan..." # # (in Arabic) # http://www.moheet.com/show_news.aspx?nid=358861&pg=1 # http://www.almadenahnews.com/newss/news.php?c=118&id=38036 # http://www.worldtimezone.com/dst_news/dst_news_tunis02.html # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Tunisia 1939 only - Apr 15 23:00s 1:00 S Rule Tunisia 1939 only - Nov 18 23:00s 0 - Rule Tunisia 1940 only - Feb 25 23:00s 1:00 S Rule Tunisia 1941 only - Oct 6 0:00 0 - Rule Tunisia 1942 only - Mar 9 0:00 1:00 S Rule Tunisia 1942 only - Nov 2 3:00 0 - Rule Tunisia 1943 only - Mar 29 2:00 1:00 S Rule Tunisia 1943 only - Apr 17 2:00 0 - Rule Tunisia 1943 only - Apr 25 2:00 1:00 S Rule Tunisia 1943 only - Oct 4 2:00 0 - Rule Tunisia 1944 1945 - Apr Mon>=1 2:00 1:00 S Rule Tunisia 1944 only - Oct 8 0:00 0 - Rule Tunisia 1945 only - Sep 16 0:00 0 - Rule Tunisia 1977 only - Apr 30 0:00s 1:00 S Rule Tunisia 1977 only - Sep 24 0:00s 0 - Rule Tunisia 1978 only - May 1 0:00s 1:00 S Rule Tunisia 1978 only - Oct 1 0:00s 0 - Rule Tunisia 1988 only - Jun 1 0:00s 1:00 S Rule Tunisia 1988 1990 - Sep lastSun 0:00s 0 - Rule Tunisia 1989 only - Mar 26 0:00s 1:00 S Rule Tunisia 1990 only - May 1 0:00s 1:00 S Rule Tunisia 2005 only - May 1 0:00s 1:00 S Rule Tunisia 2005 only - Sep 30 1:00s 0 - Rule Tunisia 2006 2008 - Mar lastSun 2:00s 1:00 S Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 - # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. # Shanks & Pottenger say the 1911 switch was on Mar 9; go with Howse's Mar 11. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Tunis 0:40:44 - LMT 1881 May 12 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 1:00 Tunisia CE%sT # Uganda # See Africa/Nairobi. # Zambia # Zimbabwe # See Africa/Maputo. Index: stable/6/share/zoneinfo/antarctica =================================================================== --- stable/6/share/zoneinfo/antarctica (revision 283046) +++ stable/6/share/zoneinfo/antarctica (revision 283047) @@ -1,386 +1,337 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # From Paul Eggert (1999-11-15): # To keep things manageable, we list only locations occupied year-round; see # COMNAP - Stations and Bases # http://www.comnap.aq/comnap/comnap.nsf/P/Stations/ # and # Summary of the Peri-Antarctic Islands (1998-07-23) # http://www.spri.cam.ac.uk/bob/periant.htm # for information. # Unless otherwise specified, we have no time zone information. # # Except for the French entries, # I made up all time zone abbreviations mentioned here; corrections welcome! # FORMAT is 'zzz' and GMTOFF is 0 for locations while uninhabited. -# These rules are stolen from the 'southamerica' file. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule ArgAQ 1964 1966 - Mar 1 0:00 0 - -Rule ArgAQ 1964 1966 - Oct 15 0:00 1:00 S -Rule ArgAQ 1967 only - Apr 2 0:00 0 - -Rule ArgAQ 1967 1968 - Oct Sun>=1 0:00 1:00 S -Rule ArgAQ 1968 1969 - Apr Sun>=1 0:00 0 - -Rule ArgAQ 1974 only - Jan 23 0:00 1:00 S -Rule ArgAQ 1974 only - May 1 0:00 0 - -Rule ChileAQ 1972 1986 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1974 1987 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1987 only - Apr 12 3:00u 0 - -Rule ChileAQ 1988 1989 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1988 only - Oct Sun>=1 4:00u 1:00 S -Rule ChileAQ 1989 only - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1990 only - Mar 18 3:00u 0 - -Rule ChileAQ 1990 only - Sep 16 4:00u 1:00 S -Rule ChileAQ 1991 1996 - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1991 1997 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 1997 only - Mar 30 3:00u 0 - -Rule ChileAQ 1998 only - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 1998 only - Sep 27 4:00u 1:00 S -Rule ChileAQ 1999 only - Apr 4 3:00u 0 - -Rule ChileAQ 1999 2010 - Oct Sun>=9 4:00u 1:00 S -Rule ChileAQ 2000 2007 - Mar Sun>=9 3:00u 0 - -# N.B.: the end of March 29 in Chile is March 30 in Universal time, -# which is used below in specifying the transition. -Rule ChileAQ 2008 only - Mar 30 3:00u 0 - -Rule ChileAQ 2009 only - Mar Sun>=9 3:00u 0 - -Rule ChileAQ 2010 only - Apr Sun>=1 3:00u 0 - -Rule ChileAQ 2011 only - May Sun>=2 3:00u 0 - -Rule ChileAQ 2011 only - Aug Sun>=16 4:00u 1:00 S -Rule ChileAQ 2012 2015 - Apr Sun>=23 3:00u 0 - -Rule ChileAQ 2012 2014 - Sep Sun>=2 4:00u 1:00 S - # Argentina - year-round bases # Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05 # Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01 # Esperanza, Hope Bay, -6323-05659, since 1952-12-17 # Marambio, -6414-05637, since 1969-10-29 # Orcadas, Laurie I, -6016-04444, since 1904-02-22 # San Martín, Barry I, -6808-06706, since 1951-03-21 # (except 1960-03 / 1976-03-21) # Australia - territories # Heard Island, McDonald Islands (uninhabited) # previously sealers and scientific personnel wintered # Margaret Turner reports # http://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html # (1999-09-30) that they're UTC+5, with no DST; # presumably this is when they have visitors. # # year-round bases # Casey, Bailey Peninsula, -6617+11032, since 1969 # Davis, Vestfold Hills, -6835+07759, since 1957-01-13 # (except 1964-11 - 1969-02) # Mawson, Holme Bay, -6736+06253, since 1954-02-13 # From Steffen Thorsen (2009-03-11): # Three Australian stations in Antarctica have changed their time zone: # Casey moved from UTC+8 to UTC+11 # Davis moved from UTC+7 to UTC+5 # Mawson moved from UTC+6 to UTC+5 # The changes occurred on 2009-10-18 at 02:00 (local times). # # Government source: (Australian Antarctic Division) # http://www.aad.gov.au/default.asp?casid=37079 # # We have more background information here: # http://www.timeanddate.com/news/time/antarctica-new-times.html # From Steffen Thorsen (2010-03-10): # We got these changes from the Australian Antarctic Division: ... # # - Casey station reverted to its normal time of UTC+8 on 5 March 2010. # The change to UTC+11 is being considered as a regular summer thing but # has not been decided yet. # # - Davis station will revert to its normal time of UTC+7 at 10 March 2010 # 20:00 UTC. # # - Mawson station stays on UTC+5. # # Background: # http://www.timeanddate.com/news/time/antartica-time-changes-2010.html # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Antarctica/Casey 0 - zzz 1969 8:00 - AWST 2009 Oct 18 2:00 # Australian Western Std Time 11:00 - CAST 2010 Mar 5 2:00 # Casey Time 8:00 - AWST 2011 Oct 28 2:00 11:00 - CAST 2012 Feb 21 17:00u 8:00 - AWST Zone Antarctica/Davis 0 - zzz 1957 Jan 13 7:00 - DAVT 1964 Nov # Davis Time 0 - zzz 1969 Feb 7:00 - DAVT 2009 Oct 18 2:00 5:00 - DAVT 2010 Mar 10 20:00u 7:00 - DAVT 2011 Oct 28 2:00 5:00 - DAVT 2012 Feb 21 20:00u 7:00 - DAVT Zone Antarctica/Mawson 0 - zzz 1954 Feb 13 6:00 - MAWT 2009 Oct 18 2:00 # Mawson Time 5:00 - MAWT # References: # Casey Weather (1998-02-26) # http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html # Davis Station, Antarctica (1998-02-26) # http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html # Mawson Station, Antarctica (1998-02-25) # http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html # Belgium - year-round base # Princess Elisabeth, Queen Maud Land, -713412+0231200, since 2007 # Brazil - year-round base # Ferraz, King George Island, -6205+05824, since 1983/4 # Bulgaria - year-round base # St. Kliment Ohridski, Livingston Island, -623829-0602153, since 1988 # Chile - year-round bases and towns # Escudero, South Shetland Is, -621157-0585735, since 1994 # Frei Montalva, King George Island, -6214-05848, since 1969-03-07 # O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02 # Prat, -6230-05941 # Villa Las Estrellas (a town), around the Frei base, since 1984-04-09 # These locations have always used Santiago time; use TZ='America/Santiago'. # China - year-round bases # Great Wall, King George Island, -6213-05858, since 1985-02-20 # Zhongshan, Larsemann Hills, Prydz Bay, -6922+07623, since 1989-02-26 # France - year-round bases (also see "France & Italy") # # From Antoine Leca (1997-01-20): # Time data entries are from Nicole Pailleau at the IFRTP # (French Institute for Polar Research and Technology). # She confirms that French Southern Territories and Terre Adélie bases # don't observe daylight saving time, even if Terre Adélie supplies came # from Tasmania. # # French Southern Territories with year-round inhabitants # # Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964; # sealing & whaling stations operated variously 1802/1911+; # see Indian/Reunion. # # Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950 # Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951; # whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956 # # St Paul Island - near Amsterdam, uninhabited # fishing stations operated variously 1819/1931 # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français 5:00 - TFT # ISO code TF Time # # year-round base in the main continent # Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 # (2005-12-05) # # Another base at Port-Martin, 50km east, began operation in 1947. # It was destroyed by fire on 1952-01-14. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Antarctica/DumontDUrville 0 - zzz 1947 10:00 - PMT 1952 Jan 14 # Port-Martin Time 0 - zzz 1956 Nov 10:00 - DDUT # Dumont-d'Urville Time # France & Italy - year-round base # Concordia, -750600+1232000, since 2005 # Germany - year-round base # Neumayer III, -704080-0081602, since 2009 # India - year-round bases # Bharati, -692428+0761114, since 2012 # Maitri, -704558+0114356, since 1989 # Italy - year-round base (also see "France & Italy") # Zuchelli, Terra Nova Bay, -744140+1640647, since 1986 # Japan - year-round bases # Syowa (also known as Showa), -690022+0393524, since 1957 # # From Hideyuki Suzuki (1999-02-06): # In all Japanese stations, +0300 is used as the standard time. # # Syowa station, which is the first antarctic station of Japan, # was established on 1957-01-29. Since Syowa station is still the main # station of Japan, it's appropriate for the principal location. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Antarctica/Syowa 0 - zzz 1957 Jan 29 3:00 - SYOT # Syowa Time # See: # NIPR Antarctic Research Activities (1999-08-17) # http://www.nipr.ac.jp/english/ara01.html # S Korea - year-round base # Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014 # King Sejong, King George Island, -6213-05847, since 1988 # New Zealand - claims # Balleny Islands (never inhabited) # Scott Island (never inhabited) # # year-round base # Scott Base, Ross Island, since 1957-01. # See Pacific/Auckland. # Norway - territories # Bouvet (never inhabited) # # claims # Peter I Island (never inhabited) # # year-round base # Troll, Queen Maud Land, -720041+0023206, since 2005-02-12 # # From Paul-Inge Flakstad (2014-03-10): # I recently had a long dialog about this with the developer of timegenie.com. # In the absence of specific dates, he decided to choose some likely ones: # GMT +1 - From March 1 to the last Sunday in March # GMT +2 - From the last Sunday in March until the last Sunday in October # GMT +1 - From the last Sunday in October until November 7 # GMT +0 - From November 7 until March 1 # The dates for switching to and from UTC+0 will probably not be absolutely # correct, but they should be quite close to the actual dates. # # From Paul Eggert (2014-03-21): # The CET-switching Troll rules require zic from tzcode 2014b or later, so as # suggested by Bengt-Inge Larsson comment them out for now, and approximate # with only UTC and CEST. Uncomment them when 2014b is more prevalent. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S #Rule Troll 2005 max - Mar 1 1:00u 1:00 CET Rule Troll 2005 max - Mar lastSun 1:00u 2:00 CEST #Rule Troll 2005 max - Oct lastSun 1:00u 1:00 CET #Rule Troll 2004 max - Nov 7 1:00u 0:00 UTC # Remove the following line when uncommenting the above '#Rule' lines. Rule Troll 2004 max - Oct lastSun 1:00u 0:00 UTC # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Antarctica/Troll 0 - zzz 2005 Feb 12 0:00 Troll %s # Poland - year-round base # Arctowski, King George Island, -620945-0582745, since 1977 # Romania - year-bound base # Law-Racoviță, Larsemann Hills, -692319+0762251, since 1986 # Russia - year-round bases # Bellingshausen, King George Island, -621159-0585337, since 1968-02-22 # Mirny, Davis coast, -6633+09301, since 1956-02 # Molodezhnaya, Alasheyev Bay, -6740+04551, # year-round from 1962-02 to 1999-07-01 # Novolazarevskaya, Queen Maud Land, -7046+01150, # year-round from 1960/61 to 1992 # Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 # From Craig Mundell (1994-12-15): # http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP # Vostok, which is one of the Russian stations, is set on the same # time as Moscow, Russia. # # From Lee Hotz (2001-03-08): # I queried the folks at Columbia who spent the summer at Vostok and this is # what they had to say about time there: # "in the US Camp (East Camp) we have been on New Zealand (McMurdo) # time, which is 12 hours ahead of GMT. The Russian Station Vostok was # 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead # of GMT). This is a time zone I think two hours east of Moscow. The # natural time zone is in between the two: 8 hours ahead of GMT." # # From Paul Eggert (2001-05-04): # This seems to be hopelessly confusing, so I asked Lee Hotz about it # in person. He said that some Antarctic locations set their local # time so that noon is the warmest part of the day, and that this # changes during the year and does not necessarily correspond to mean # solar noon. So the Vostok time might have been whatever the clocks # happened to be during their visit. So we still don't really know what time # it is at Vostok. But we'll guess UTC+6. # Zone Antarctica/Vostok 0 - zzz 1957 Dec 16 6:00 - VOST # Vostok time # S Africa - year-round bases # Marion Island, -4653+03752 # SANAE IV, Vesleskarvet, Queen Maud Land, -714022-0025026, since 1997 # Ukraine - year-round base # Vernadsky (formerly Faraday), Galindez Island, -651445-0641526, since 1954 # United Kingdom # # British Antarctic Territories (BAT) claims # South Orkney Islands # scientific station from 1903 # whaling station at Signy I 1920/1926 # South Shetland Islands # # year-round bases # Bird Island, South Georgia, -5400-03803, since 1983 # Deception Island, -6259-06034, whaling station 1912/1931, # scientific station 1943/1967, # previously sealers and a scientific expedition wintered by accident, # and a garrison was deployed briefly # Halley, Coates Land, -7535-02604, since 1956-01-06 # Halley is on a moving ice shelf and is periodically relocated # so that it is never more than 10km from its nominal location. # Rothera, Adelaide Island, -6734-6808, since 1976-12-01 # # From Paul Eggert (2002-10-22) # says Rothera is -03 all year. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Antarctica/Rothera 0 - zzz 1976 Dec 1 -3:00 - ROTT # Rothera time # Uruguay - year round base # Artigas, King George Island, -621104-0585107 # USA - year-round bases # # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) -# -# From Ethan Dicks (1996-10-06): -# It keeps the same time as Punta Arenas, Chile, because, just like us -# and the South Pole, that's the other end of their supply line.... -# I verified with someone who was there that since 1980, -# Palmer has followed Chile. Prior to that, before the Falklands War, -# Palmer used to be supplied from Argentina. -# -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Antarctica/Palmer 0 - zzz 1965 - -4:00 ArgAQ AR%sT 1969 Oct 5 - -3:00 ArgAQ AR%sT 1982 May - -4:00 ChileAQ CL%sT 2015 Apr 26 3:00u - -3:00 - CLT -# +# See 'southamerica' for Antarctica/Palmer, since it uses South American DST. # # McMurdo Station, Ross Island, since 1955-12 # Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20 # # From Chris Carrier (1996-06-27): # Siple, the first commander of the South Pole station, # stated that he would have liked to have kept GMT at the station, # but that he found it more convenient to keep GMT+12 # as supplies for the station were coming from McMurdo Sound, # which was on GMT+12 because New Zealand was on GMT+12 all year # at that time (1957). (Source: Siple's book 90 Degrees South.) # # From Susan Smith # http://www.cybertours.com/whs/pole10.html # (1995-11-13 16:24:56 +1300, no longer available): # We use the same time as McMurdo does. # And they use the same time as Christchurch, NZ does.... # One last quirk about South Pole time. # All the electric clocks are usually wrong. # Something about the generators running at 60.1hertz or something # makes all of the clocks run fast. So every couple of days, # we have to go around and set them back 5 minutes or so. # Maybe if we let them run fast all of the time, we'd get to leave here sooner!! # # See 'australasia' for Antarctica/McMurdo. Index: stable/6/share/zoneinfo/backward =================================================================== --- stable/6/share/zoneinfo/backward (revision 283046) +++ stable/6/share/zoneinfo/backward (revision 283047) @@ -1,122 +1,123 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # This file provides links between current names for time zones # and their old names. Many names changed in late 1993. # Link TARGET LINK-NAME Link Africa/Nairobi Africa/Asmera Link Africa/Abidjan Africa/Timbuktu Link America/Argentina/Catamarca America/Argentina/ComodRivadavia Link America/Adak America/Atka Link America/Argentina/Buenos_Aires America/Buenos_Aires Link America/Argentina/Catamarca America/Catamarca Link America/Atikokan America/Coral_Harbour Link America/Argentina/Cordoba America/Cordoba Link America/Tijuana America/Ensenada Link America/Indiana/Indianapolis America/Fort_Wayne Link America/Indiana/Indianapolis America/Indianapolis Link America/Argentina/Jujuy America/Jujuy Link America/Indiana/Knox America/Knox_IN Link America/Kentucky/Louisville America/Louisville Link America/Argentina/Mendoza America/Mendoza +Link America/Toronto America/Montreal Link America/Rio_Branco America/Porto_Acre Link America/Argentina/Cordoba America/Rosario Link America/Denver America/Shiprock Link America/Port_of_Spain America/Virgin Link Pacific/Auckland Antarctica/South_Pole Link Asia/Ashgabat Asia/Ashkhabad Link Asia/Kolkata Asia/Calcutta Link Asia/Shanghai Asia/Chongqing Link Asia/Shanghai Asia/Chungking Link Asia/Dhaka Asia/Dacca Link Asia/Shanghai Asia/Harbin Link Asia/Urumqi Asia/Kashgar Link Asia/Kathmandu Asia/Katmandu Link Asia/Macau Asia/Macao Link Asia/Ho_Chi_Minh Asia/Saigon Link Asia/Jerusalem Asia/Tel_Aviv Link Asia/Thimphu Asia/Thimbu Link Asia/Makassar Asia/Ujung_Pandang Link Asia/Ulaanbaatar Asia/Ulan_Bator Link Atlantic/Faroe Atlantic/Faeroe Link Europe/Oslo Atlantic/Jan_Mayen Link Australia/Sydney Australia/ACT Link Australia/Sydney Australia/Canberra Link Australia/Lord_Howe Australia/LHI Link Australia/Sydney Australia/NSW Link Australia/Darwin Australia/North Link Australia/Brisbane Australia/Queensland Link Australia/Adelaide Australia/South Link Australia/Hobart Australia/Tasmania Link Australia/Melbourne Australia/Victoria Link Australia/Perth Australia/West Link Australia/Broken_Hill Australia/Yancowinna Link America/Rio_Branco Brazil/Acre Link America/Noronha Brazil/DeNoronha Link America/Sao_Paulo Brazil/East Link America/Manaus Brazil/West Link America/Halifax Canada/Atlantic Link America/Winnipeg Canada/Central Link America/Regina Canada/East-Saskatchewan Link America/Toronto Canada/Eastern Link America/Edmonton Canada/Mountain Link America/St_Johns Canada/Newfoundland Link America/Vancouver Canada/Pacific Link America/Regina Canada/Saskatchewan Link America/Whitehorse Canada/Yukon Link America/Santiago Chile/Continental Link Pacific/Easter Chile/EasterIsland Link America/Havana Cuba Link Africa/Cairo Egypt Link Europe/Dublin Eire Link Europe/London Europe/Belfast Link Europe/Chisinau Europe/Tiraspol Link Europe/London GB Link Europe/London GB-Eire Link Etc/GMT GMT+0 Link Etc/GMT GMT-0 Link Etc/GMT GMT0 Link Etc/GMT Greenwich Link Asia/Hong_Kong Hongkong Link Atlantic/Reykjavik Iceland Link Asia/Tehran Iran Link Asia/Jerusalem Israel Link America/Jamaica Jamaica Link Asia/Tokyo Japan Link Pacific/Kwajalein Kwajalein Link Africa/Tripoli Libya Link America/Tijuana Mexico/BajaNorte Link America/Mazatlan Mexico/BajaSur Link America/Mexico_City Mexico/General Link Pacific/Auckland NZ Link Pacific/Chatham NZ-CHAT Link America/Denver Navajo Link Asia/Shanghai PRC Link Pacific/Pohnpei Pacific/Ponape Link Pacific/Pago_Pago Pacific/Samoa Link Pacific/Chuuk Pacific/Truk Link Pacific/Chuuk Pacific/Yap Link Europe/Warsaw Poland Link Europe/Lisbon Portugal Link Asia/Taipei ROC Link Asia/Seoul ROK Link Asia/Singapore Singapore Link Europe/Istanbul Turkey Link Etc/UCT UCT Link America/Anchorage US/Alaska Link America/Adak US/Aleutian Link America/Phoenix US/Arizona Link America/Chicago US/Central Link America/Indiana/Indianapolis US/East-Indiana Link America/New_York US/Eastern Link Pacific/Honolulu US/Hawaii Link America/Indiana/Knox US/Indiana-Starke Link America/Detroit US/Michigan Link America/Denver US/Mountain Link America/Los_Angeles US/Pacific Link Pacific/Pago_Pago US/Samoa Link Etc/UTC UTC Link Etc/UTC Universal Link Europe/Moscow W-SU Link Etc/UTC Zulu Index: stable/6/share/zoneinfo/europe =================================================================== --- stable/6/share/zoneinfo/europe (revision 283046) +++ stable/6/share/zoneinfo/europe (revision 283047) @@ -1,3395 +1,3395 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # This file is by no means authoritative; if you think you know better, # go ahead and edit the file (and please send any changes to # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. # From Paul Eggert (2014-10-31): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), # San Diego: ACS Publications, Inc. (2003). # Unfortunately this book contains many errors and cites no sources. # # Gwillim Law writes that a good source # for recent time zone data is the International Air Transport # Association's Standard Schedules Information Manual (IATA SSIM), # published semiannually. Law sent in several helpful summaries # of the IATA's data after 1990. Except where otherwise noted, # IATA SSIM is the source for entries after 1990. # # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). # # Except where otherwise noted, Shanks & Pottenger is the source for # entries through 1991, and IATA SSIM is the source for entries afterwards. # # Other sources occasionally used include: # # Edward W. Whitman, World Time Differences, # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), # which I found in the UCLA library. # # William Willett, The Waste of Daylight, 19th edition # # [PDF] (1914-03) # # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 # . He writes: # "It is requested that corrections and additions to these tables # may be sent to Mr. John Milne, Royal Geographical Society, # Savile Row, London." Nowadays please email them to tz@iana.org. # # Byalokoz EL. New Counting of Time in Russia since July 1, 1919. # This Russian-language source was consulted by Vladimir Karpinsky; see # http://mm.icann.org/pipermail/tz/2014-August/021320.html # The full Russian citation is: # Бялокоз, Евгений Людвигович. Новый счет времени в течении суток # введенный декретом Совета народных комиссаров для всей России с 1-го # июля 1919 г. / Изд. 2-е Междуведомственной комиссии. - Петроград: # Десятая гос. тип., 1919. # http://resolver.gpntb.ru/purl?docushare/dsweb/Get/Resource-2011/Byalokoz__E.L.__Novyy__schet__vremeni__v__techenie__sutok__izd__2(1).pdf # # Brazil's Divisão Serviço da Hora (DSHO), # History of Summer Time # # (1998-09-21, in Portuguese) # # I invented the abbreviations marked '*' in the following table; # the rest are from earlier versions of this file, or from other sources. # Corrections are welcome! # std dst 2dst # LMT Local Mean Time # -4:00 AST ADT Atlantic # -3:00 WGT WGST Western Greenland* # -1:00 EGT EGST Eastern Greenland* # 0:00 GMT BST BDST Greenwich, British Summer # 0:00 GMT IST Greenwich, Irish Summer # 0:00 WET WEST WEMT Western Europe # 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)* # 0:20 NET NEST Netherlands (1937-1940)* # 1:00 BST British Standard (1968-1971) # 1:00 CET CEST CEMT Central Europe # 1:00:14 SET Swedish (1879-1899)* # 2:00 EET EEST Eastern Europe # 3:00 FET Further-eastern Europe (2011-2014)* -# 3:00 MSK MSD MSM* Moscow +# 3:00 MSK MSD MSM* Minsk, Moscow # From Peter Ilieve (1994-12-04), # The original six [EU members]: Belgium, France, (West) Germany, Italy, # Luxembourg, the Netherlands. # Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom. # Plus, from 1 Jan 81: Greece. # Plus, from 1 Jan 86: Spain, Portugal. # Plus, from 1 Jan 95: Austria, Finland, Sweden. (Norway negotiated terms for # entry but in a referendum on 28 Nov 94 the people voted No by 52.2% to 47.8% # on a turnout of 88.6%. This was almost the same result as Norway's previous # referendum in 1972, they are the only country to have said No twice. # Referendums in the other three countries voted Yes.) # ... # Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT. # I don't think they know yet what they will do from 1996 onwards. # ... # There shouldn't be any [current members who are not using EU rules]. # A Directive has the force of law, member states are obliged to enact # national law to implement it. The only contentious issue was the # different end date for the UK and Ireland, and this was always allowed # in the Directive. ############################################################################### # Britain (United Kingdom) and Ireland (Eire) # From Peter Ilieve (1994-07-06): # # On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about # historical vistas along the Thames in west London. There was a photo # and a sketch map showing some of the sightlines involved. One paragraph # of the text said: # # 'An old stone obelisk marking a forgotten terrestrial meridian stands # beside the river at Kew. In the 18th century, before time and longitude # was standardised by the Royal Observatory in Greenwich, scholars observed # this stone and the movement of stars from Kew Observatory nearby. They # made their calculations and set the time for the Horse Guards and Parliament, # but now the stone is obscured by scrubwood and can only be seen by walking # along the towpath within a few yards of it.' # # I have a one inch to one mile map of London and my estimate of the stone's # position is 51 degrees 28' 30" N, 0 degrees 18' 45" W. The longitude should # be within about +-2". The Ordnance Survey grid reference is TQ172761. # # [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.] # From Paul Eggert (1993-11-18): # # Howse writes that Britain was the first country to use standard time. # The railways cared most about the inconsistencies of local mean time, # and it was they who forced a uniform time on the country. # The original idea was credited to Dr. William Hyde Wollaston (1766-1828) # and was popularized by Abraham Follett Osler (1808-1903). # The first railway to adopt London time was the Great Western Railway # in November 1840; other railways followed suit, and by 1847 most # (though not all) railways used London time. On 1847-09-22 the # Railway Clearing House, an industry standards body, recommended that GMT be # adopted at all stations as soon as the General Post Office permitted it. # The transition occurred on 12-01 for the L&NW, the Caledonian, # and presumably other railways; the January 1848 Bradshaw's lists many # railways as using GMT. By 1855 the vast majority of public # clocks in Britain were set to GMT (though some, like the great clock # on Tom Tower at Christ Church, Oxford, were fitted with two minute hands, # one for local time and one for GMT). The last major holdout was the legal # system, which stubbornly stuck to local time for many years, leading # to oddities like polls opening at 08:13 and closing at 16:13. # The legal system finally switched to GMT when the Statutes (Definition # of Time) Act took effect; it received the Royal Assent on 1880-08-02. # # In the tables below, we condense this complicated story into a single # transition date for London, namely 1847-12-01. We don't know as much # about Dublin, so we use 1880-08-02, the legal transition time. # From Paul Eggert (2014-07-19): # The ancients had no need for daylight saving, as they kept time # informally or via hours whose length depended on the time of year. # Daylight saving time in its modern sense was invented by the # New Zealand entomologist George Vernon Hudson (1867-1946), # whose day job as a postal clerk led him to value # after-hours daylight in which to pursue his research. # In 1895 he presented a paper to the Wellington Philosophical Society # that proposed a two-hour daylight-saving shift. See: # Hudson GV. On seasonal time-adjustment in countries south of lat. 30 deg. # Transactions and Proceedings of the New Zealand Institute. 1895;28:734 # http://rsnz.natlib.govt.nz/volume/rsnz_28/rsnz_28_00_006110.html # Although some interest was expressed in New Zealand, his proposal # did not find its way into law and eventually it was almost forgotten. # # In England, DST was independently reinvented by William Willett (1857-1915), # a London builder and member of the Royal Astronomical Society # who circulated a pamphlet "The Waste of Daylight" (1907) # that proposed advancing clocks 20 minutes on each of four Sundays in April, # and retarding them by the same amount on four Sundays in September. # A bill was drafted in 1909 and introduced in Parliament several times, # but it met with ridicule and opposition, especially from farming interests. # Later editions of the pamphlet proposed one-hour summer time, and # it was eventually adopted as a wartime measure in 1916. # See: Summer Time Arrives Early, The Times (2000-05-18). # A monument to Willett was unveiled on 1927-05-21, in an open space in # a 45-acre wood near Chislehurst, Kent that was purchased by popular # subscription and open to the public. On the south face of the monolith, # designed by G. W. Miller, is the William Willett Memorial Sundial, # which is permanently set to Summer Time. # From Winston Churchill (1934-04-28): # It is one of the paradoxes of history that we should owe the boon of # summer time, which gives every year to the people of this country # between 160 and 170 hours more daylight leisure, to a war which # plunged Europe into darkness for four years, and shook the # foundations of civilization throughout the world. # -- "A Silent Toast to William Willett", Pictorial Weekly; # republished in Finest Hour (Spring 2002) 1(114):26 # http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf # From Paul Eggert (1996-09-03): # The OED Supplement says that the English originally said "Daylight Saving" # when they were debating the adoption of DST in 1908; but by 1916 this # term appears only in quotes taken from DST's opponents, whereas the # proponents (who eventually won the argument) are quoted as using "Summer". # From Arthur David Olson (1989-01-19): # A source at the British Information Office in New York avers that it's # known as "British" Summer Time in all parts of the United Kingdom. # Date: 4 Jan 89 08:57:25 GMT (Wed) # From: Jonathan Leffler # [British Summer Time] is fixed annually by Act of Parliament. # If you can predict what Parliament will do, you should be in # politics making a fortune, not computing. # From Chris Carrier (1996-06-14): # I remember reading in various wartime issues of the London Times the # acronym BDST for British Double Summer Time. Look for the published # time of sunrise and sunset in The Times, when BDST was in effect, and # if you find a zone reference it will say, "All times B.D.S.T." # From Joseph S. Myers (1999-09-02): # ... some military cables (WO 219/4100 - this is a copy from the # main SHAEF archives held in the US National Archives, SHAEF/5252/8/516) # agree that the usage is BDST (this appears in a message dated 17 Feb 1945). # From Joseph S. Myers (2000-10-03): # On 18th April 1941, Sir Stephen Tallents of the BBC wrote to Sir # Alexander Maxwell of the Home Office asking whether there was any # official designation; the reply of the 21st was that there wasn't # but he couldn't think of anything better than the "Double British # Summer Time" that the BBC had been using informally. # http://www.polyomino.org.uk/british-time/bbc-19410418.png # http://www.polyomino.org.uk/british-time/ho-19410421.png # From Sir Alexander Maxwell in the above-mentioned letter (1941-04-21): # [N]o official designation has as far as I know been adopted for the time # which is to be introduced in May.... # I cannot think of anything better than "Double British Summer Time" # which could not be said to run counter to any official description. # From Paul Eggert (2000-10-02): # Howse writes (p 157) 'DBST' too, but 'BDST' seems to have been common # and follows the more usual convention of putting the location name first, # so we use 'BDST'. # Peter Ilieve (1998-04-19) described at length # the history of summer time legislation in the United Kingdom. # Since 1998 Joseph S. Myers has been updating # and extending this list, which can be found in # http://www.polyomino.org.uk/british-time/ # From Joseph S. Myers (1998-01-06): # # The legal time in the UK outside of summer time is definitely GMT, not UTC; # see Lord Tanlaw's speech # http://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0 # (Lords Hansard 11 June 1997 columns 964 to 976). # From Paul Eggert (2006-03-22): # # For lack of other data, follow Shanks & Pottenger for Eire in 1940-1948. # # Given Ilieve and Myers's data, the following claims by Shanks & Pottenger # are incorrect: # * Wales did not switch from GMT to daylight saving time until # 1921 Apr 3, when they began to conform with the rest of Great Britain. # Actually, Wales was identical after 1880. # * Eire had two transitions on 1916 Oct 1. # It actually just had one transition. # * Northern Ireland used single daylight saving time throughout WW II. # Actually, it conformed to Britain. # * GB-Eire changed standard time to 1 hour ahead of GMT on 1968-02-18. # Actually, that date saw the usual switch to summer time. # Standard time was not changed until 1968-10-27 (the clocks didn't change). # # Here is another incorrect claim by Shanks & Pottenger: # * Jersey, Guernsey, and the Isle of Man did not switch from GMT # to daylight saving time until 1921 Apr 3, when they began to # conform with Great Britain. # S.R.&O. 1916, No. 382 and HO 45/10811/312364 (quoted above) say otherwise. # # The following claim by Shanks & Pottenger is possible though doubtful; # we'll ignore it for now. # * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00. # # # Whitman says Dublin Mean Time was -0:25:21, which is more precise than # Shanks & Pottenger. # Perhaps this was Dunsink Observatory Time, as Dunsink Observatory # (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was # to London. For example: # # "Timeball on the ballast office is down. Dunsink time." # -- James Joyce, Ulysses # "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time # was among various actions undertaken by the 'English' government that # would 'put the whole country into the SF (Sinn Féin) camp'. She claimed # Irish 'public feeling (was) outraged by forcing of English time on us'." # -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising. # Irish Times 2014-10-27. # http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411 # From Joseph S. Myers (2005-01-26): # Irish laws are available online at . # These include various relating to legal time, for example: # # ZZA13Y1923.html ZZA12Y1924.html ZZA8Y1925.html ZZSIV20PG1267.html # # ZZSI71Y1947.html ZZSI128Y1948.html ZZSI23Y1949.html ZZSI41Y1950.html # ZZSI27Y1951.html ZZSI73Y1952.html # # ZZSI11Y1961.html ZZSI232Y1961.html ZZSI182Y1962.html # ZZSI167Y1963.html ZZSI257Y1964.html ZZSI198Y1967.html # ZZA23Y1968.html ZZA17Y1971.html # # ZZSI67Y1981.html ZZSI212Y1982.html ZZSI45Y1986.html # ZZSI264Y1988.html ZZSI52Y1990.html ZZSI371Y1992.html # ZZSI395Y1994.html ZZSI484Y1997.html ZZSI506Y2001.html # # [These are all relative to the root, e.g., the first is # .] # # (These are those I found, but there could be more. In any case these # should allow various updates to the comments in the europe file to cover # the laws applicable in Ireland.) # # (Note that the time in the Republic of Ireland since 1968 has been defined # in terms of standard time being GMT+1 with a period of winter time when it # is GMT, rather than standard time being GMT with a period of summer time # being GMT+1.) # From Paul Eggert (1999-03-28): # Clive Feather (, 1997-03-31) # reports that Folkestone (Cheriton) Shuttle Terminal uses Concession Time # (CT), equivalent to French civil time. # Julian Hill (, 1998-09-30) reports that # trains between Dollands Moor (the freight facility next door) # and Frethun run in CT. # My admittedly uninformed guess is that the terminal has two authorities, # the French concession operators and the British civil authorities, # and that the time depends on who you're talking to. # If, say, the British police were called to the station for some reason, # I would expect the official police report to use GMT/BST and not CET/CEST. # This is a borderline case, but for now let's stick to GMT/BST. # From an anonymous contributor (1996-06-02): # The law governing time in Ireland is under Statutory Instrument SI 395/94, # which gives force to European Union 7th Council Directive # 94/21/EC. # Under this directive, the Minister for Justice in Ireland makes appropriate # regulations. I spoke this morning with the Secretary of the Department of # Justice (tel +353 1 678 9711) who confirmed to me that the correct name is # "Irish Summer Time", abbreviated to "IST". # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Summer Time Act, 1916 Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT # S.R.&O. 1917, No. 358 Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT # S.R.&O. 1918, No. 274 Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT # S.R.&O. 1919, No. 297 Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT # S.R.&O. 1920, No. 458 Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST # S.R.&O. 1920, No. 1844 Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT # S.R.&O. 1921, No. 363 Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT # S.R.&O. 1922, No. 264 Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST Rule GB-Eire 1922 only - Oct 8 2:00s 0 GMT # The Summer Time Act, 1922 Rule GB-Eire 1923 only - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1923 1924 - Sep Sun>=16 2:00s 0 GMT Rule GB-Eire 1924 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST # The Summer Time Act, 1925 Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT Rule GB-Eire 1927 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1930 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1933 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1934 only - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1935 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1938 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST # S.R.&O. 1939, No. 1379 Rule GB-Eire 1939 only - Nov Sun>=16 2:00s 0 GMT # S.R.&O. 1940, No. 172 and No. 1883 Rule GB-Eire 1940 only - Feb Sun>=23 2:00s 1:00 BST # S.R.&O. 1941, No. 476 Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 BDST Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST # S.R.&O. 1942, No. 506 Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 BDST # S.R.&O. 1944, No. 932 Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST # S.R.&O. 1945, No. 312 Rule GB-Eire 1945 only - Apr Mon>=2 1:00s 2:00 BDST Rule GB-Eire 1945 only - Jul Sun>=9 1:00s 1:00 BST # S.R.&O. 1945, No. 1208 Rule GB-Eire 1945 1946 - Oct Sun>=2 2:00s 0 GMT Rule GB-Eire 1946 only - Apr Sun>=9 2:00s 1:00 BST # The Summer Time Act, 1947 Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 BDST Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT # Summer Time Order, 1948 (S.I. 1948/495) Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST Rule GB-Eire 1948 only - Oct 31 2:00s 0 GMT # Summer Time Order, 1949 (S.I. 1949/373) Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST Rule GB-Eire 1949 only - Oct 30 2:00s 0 GMT # Summer Time Order, 1950 (S.I. 1950/518) # Summer Time Order, 1951 (S.I. 1951/430) # Summer Time Order, 1952 (S.I. 1952/451) Rule GB-Eire 1950 1952 - Apr Sun>=14 2:00s 1:00 BST Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT # revert to the rules of the Summer Time Act, 1925 Rule GB-Eire 1953 only - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1953 1960 - Oct Sun>=2 2:00s 0 GMT Rule GB-Eire 1954 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1957 only - Apr Sun>=9 2:00s 1:00 BST Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST Rule GB-Eire 1960 only - Apr Sun>=9 2:00s 1:00 BST # Summer Time Order, 1961 (S.I. 1961/71) # Summer Time (1962) Order, 1961 (S.I. 1961/2465) # Summer Time Order, 1963 (S.I. 1963/81) Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST Rule GB-Eire 1961 1968 - Oct Sun>=23 2:00s 0 GMT # Summer Time (1964) Order, 1963 (S.I. 1963/2101) # Summer Time Order, 1964 (S.I. 1964/1201) # Summer Time Order, 1967 (S.I. 1967/1148) Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST # Summer Time Order, 1968 (S.I. 1968/117) Rule GB-Eire 1968 only - Feb 18 2:00s 1:00 BST # The British Standard Time Act, 1968 # (no summer time) # The Summer Time Act, 1972 Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT # Summer Time Order, 1980 (S.I. 1980/1089) # Summer Time Order, 1982 (S.I. 1982/1673) # Summer Time Order, 1986 (S.I. 1986/223) # Summer Time Order, 1988 (S.I. 1988/931) Rule GB-Eire 1981 1995 - Mar lastSun 1:00u 1:00 BST Rule GB-Eire 1981 1989 - Oct Sun>=23 1:00u 0 GMT # Summer Time Order, 1989 (S.I. 1989/985) # Summer Time Order, 1992 (S.I. 1992/1729) # Summer Time Order 1994 (S.I. 1994/2798) Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT # Summer Time Order 1997 (S.I. 1997/2982) # See EU for rules starting in 1996. # # Use Europe/London for Jersey, Guernsey, and the Isle of Man. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s 0:00 GB-Eire %s 1968 Oct 27 1:00 - BST 1971 Oct 31 2:00u 0:00 GB-Eire %s 1996 0:00 EU GMT/BST Link Europe/London Europe/Jersey Link Europe/London Europe/Guernsey Link Europe/London Europe/Isle_of_Man # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00 -0:25:21 1:00 IST 1916 Oct 1 2:00s 0:00 GB-Eire %s 1921 Dec 6 # independence 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00 0:00 1:00 IST 1946 Oct 6 2:00 0:00 - GMT 1947 Mar 16 2:00 0:00 1:00 IST 1947 Nov 2 2:00 0:00 - GMT 1948 Apr 18 2:00 0:00 GB-Eire GMT/IST 1968 Oct 27 1:00 - IST 1971 Oct 31 2:00u 0:00 GB-Eire GMT/IST 1996 0:00 EU GMT/IST ############################################################################### # Europe # EU rules are for the European Union, previously known as the EC, EEC, # Common Market, etc. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S Rule EU 1977 only - Sep lastSun 1:00u 0 - Rule EU 1978 only - Oct 1 1:00u 0 - Rule EU 1979 1995 - Sep lastSun 1:00u 0 - Rule EU 1981 max - Mar lastSun 1:00u 1:00 S Rule EU 1996 max - Oct lastSun 1:00u 0 - # The most recent directive covers the years starting in 2002. See: # Directive 2000/84/EC of the European Parliament and of the Council # of 19 January 2001 on summer-time arrangements. # http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:NOT # W-Eur differs from EU only in that W-Eur uses standard time. Rule W-Eur 1977 1980 - Apr Sun>=1 1:00s 1:00 S Rule W-Eur 1977 only - Sep lastSun 1:00s 0 - Rule W-Eur 1978 only - Oct 1 1:00s 0 - Rule W-Eur 1979 1995 - Sep lastSun 1:00s 0 - Rule W-Eur 1981 max - Mar lastSun 1:00s 1:00 S Rule W-Eur 1996 max - Oct lastSun 1:00s 0 - # Older C-Eur rules are for convenience in the tables. # From 1977 on, C-Eur differs from EU only in that C-Eur uses standard time. Rule C-Eur 1916 only - Apr 30 23:00 1:00 S Rule C-Eur 1916 only - Oct 1 1:00 0 - Rule C-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 S Rule C-Eur 1917 1918 - Sep Mon>=15 2:00s 0 - Rule C-Eur 1940 only - Apr 1 2:00s 1:00 S Rule C-Eur 1942 only - Nov 2 2:00s 0 - Rule C-Eur 1943 only - Mar 29 2:00s 1:00 S Rule C-Eur 1943 only - Oct 4 2:00s 0 - Rule C-Eur 1944 1945 - Apr Mon>=1 2:00s 1:00 S # Whitman gives 1944 Oct 7; go with Shanks & Pottenger. Rule C-Eur 1944 only - Oct 2 2:00s 0 - # From Jesper Nørgaard Welen (2008-07-13): # # I found what is probably a typo of 2:00 which should perhaps be 2:00s # in the C-Eur rule from tz database version 2008d (this part was # corrected in version 2008d). The circumstantial evidence is simply the # tz database itself, as seen below: # # Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01 # 0:00 France WE%sT 1945 Sep 16 3:00 # # Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15 # 0:00 France WE%sT 1945 Sep 16 3:00 # # Zone Europe/Belgrade 1:22:00 - LMT 1884 # 1:00 1:00 CEST 1945 Sep 16 2:00s # # Rule France 1945 only - Sep 16 3:00 0 - # Rule Belgium 1945 only - Sep 16 2:00s 0 - # Rule Neth 1945 only - Sep 16 2:00s 0 - # # The rule line to be changed is: # # Rule C-Eur 1945 only - Sep 16 2:00 0 - # # It seems that Paris, Monaco, Rule France, Rule Belgium all agree on # 2:00 standard time, e.g. 3:00 local time. However there are no # countries that use C-Eur rules in September 1945, so the only items # affected are apparently these fictitious zones that translate acronyms # CET and MET: # # Zone CET 1:00 C-Eur CE%sT # Zone MET 1:00 C-Eur ME%sT # # It this is right then the corrected version would look like: # # Rule C-Eur 1945 only - Sep 16 2:00s 0 - # # A small step for mankind though 8-) Rule C-Eur 1945 only - Sep 16 2:00s 0 - Rule C-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 S Rule C-Eur 1977 only - Sep lastSun 2:00s 0 - Rule C-Eur 1978 only - Oct 1 2:00s 0 - Rule C-Eur 1979 1995 - Sep lastSun 2:00s 0 - Rule C-Eur 1981 max - Mar lastSun 2:00s 1:00 S Rule C-Eur 1996 max - Oct lastSun 2:00s 0 - # E-Eur differs from EU only in that E-Eur switches at midnight local time. Rule E-Eur 1977 1980 - Apr Sun>=1 0:00 1:00 S Rule E-Eur 1977 only - Sep lastSun 0:00 0 - Rule E-Eur 1978 only - Oct 1 0:00 0 - Rule E-Eur 1979 1995 - Sep lastSun 0:00 0 - Rule E-Eur 1981 max - Mar lastSun 0:00 1:00 S Rule E-Eur 1996 max - Oct lastSun 0:00 0 - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Russia 1917 only - Jul 1 23:00 1:00 MST # Moscow Summer Time Rule Russia 1917 only - Dec 28 0:00 0 MMT # Moscow Mean Time Rule Russia 1918 only - May 31 22:00 2:00 MDST # Moscow Double Summer Time Rule Russia 1918 only - Sep 16 1:00 1:00 MST Rule Russia 1919 only - May 31 23:00 2:00 MDST Rule Russia 1919 only - Jul 1 2:00 1:00 MSD Rule Russia 1919 only - Aug 16 0:00 0 MSK Rule Russia 1921 only - Feb 14 23:00 1:00 MSD Rule Russia 1921 only - Mar 20 23:00 2:00 MSM # Midsummer Rule Russia 1921 only - Sep 1 0:00 1:00 MSD Rule Russia 1921 only - Oct 1 0:00 0 - # Act No.925 of the Council of Ministers of the USSR (1980-10-24): Rule Russia 1981 1984 - Apr 1 0:00 1:00 S Rule Russia 1981 1983 - Oct 1 0:00 0 - # Act No.967 of the Council of Ministers of the USSR (1984-09-13), repeated in # Act No.227 of the Council of Ministers of the USSR (1989-03-14): Rule Russia 1984 1991 - Sep lastSun 2:00s 0 - Rule Russia 1985 1991 - Mar lastSun 2:00s 1:00 S # Rule Russia 1992 only - Mar lastSat 23:00 1:00 S Rule Russia 1992 only - Sep lastSat 23:00 0 - Rule Russia 1993 2010 - Mar lastSun 2:00s 1:00 S Rule Russia 1993 1995 - Sep lastSun 2:00s 0 - Rule Russia 1996 2010 - Oct lastSun 2:00s 0 - # As described below, Russia's 2014 change affects Zone data, not Rule data. # From Alexander Krivenyshev (2011-06-14): # According to Kremlin press service, Russian President Dmitry Medvedev # signed a federal law "On calculation of time" on June 9, 2011. # According to the law Russia is abolishing daylight saving time. # # Medvedev signed a law "On the Calculation of Time" (in russian): # http://bmockbe.ru/events/?ID=7583 # # Medvedev signed a law on the calculation of the time (in russian): # http://www.regnum.ru/news/polit/1413906.html # From Arthur David Olson (2011-06-15): # Take "abolishing daylight saving time" to mean that time is now considered # to be standard. # These are for backward compatibility with older versions. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone WET 0:00 EU WE%sT Zone CET 1:00 C-Eur CE%sT Zone MET 1:00 C-Eur ME%sT Zone EET 2:00 EU EE%sT # Previous editions of this database used abbreviations like MET DST # for Central European Summer Time, but this didn't agree with common usage. # From Markus Kuhn (1996-07-12): # The official German names ... are # # Mitteleuropäische Zeit (MEZ) = UTC+01:00 # Mitteleuropäische Sommerzeit (MESZ) = UTC+02:00 # # as defined in the German Time Act (Gesetz über die Zeitbestimmung (ZeitG), # 1978-07-25, Bundesgesetzblatt, Jahrgang 1978, Teil I, S. 1110-1111).... # I wrote ... to the German Federal Physical-Technical Institution # # Physikalisch-Technische Bundesanstalt (PTB) # Laboratorium 4.41 "Zeiteinheit" # Postfach 3345 # D-38023 Braunschweig # phone: +49 531 592-0 # # ... I received today an answer letter from Dr. Peter Hetzel, head of the PTB # department for time and frequency transmission. He explained that the # PTB translates MEZ and MESZ into English as # # Central European Time (CET) = UTC+01:00 # Central European Summer Time (CEST) = UTC+02:00 # Albania # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Albania 1940 only - Jun 16 0:00 1:00 S Rule Albania 1942 only - Nov 2 3:00 0 - Rule Albania 1943 only - Mar 29 2:00 1:00 S Rule Albania 1943 only - Apr 10 3:00 0 - Rule Albania 1974 only - May 4 0:00 1:00 S Rule Albania 1974 only - Oct 2 0:00 0 - Rule Albania 1975 only - May 1 0:00 1:00 S Rule Albania 1975 only - Oct 2 0:00 0 - Rule Albania 1976 only - May 2 0:00 1:00 S Rule Albania 1976 only - Oct 3 0:00 0 - Rule Albania 1977 only - May 8 0:00 1:00 S Rule Albania 1977 only - Oct 2 0:00 0 - Rule Albania 1978 only - May 6 0:00 1:00 S Rule Albania 1978 only - Oct 1 0:00 0 - Rule Albania 1979 only - May 5 0:00 1:00 S Rule Albania 1979 only - Sep 30 0:00 0 - Rule Albania 1980 only - May 3 0:00 1:00 S Rule Albania 1980 only - Oct 4 0:00 0 - Rule Albania 1981 only - Apr 26 0:00 1:00 S Rule Albania 1981 only - Sep 27 0:00 0 - Rule Albania 1982 only - May 2 0:00 1:00 S Rule Albania 1982 only - Oct 3 0:00 0 - Rule Albania 1983 only - Apr 18 0:00 1:00 S Rule Albania 1983 only - Oct 1 0:00 0 - Rule Albania 1984 only - Apr 1 0:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tirane 1:19:20 - LMT 1914 1:00 - CET 1940 Jun 16 1:00 Albania CE%sT 1984 Jul 1:00 EU CE%sT # Andorra # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Andorra 0:06:04 - LMT 1901 0:00 - WET 1946 Sep 30 1:00 - CET 1985 Mar 31 2:00 1:00 EU CE%sT # Austria # Milne says Vienna time was 1:05:21. # From Paul Eggert (2006-03-22): Shanks & Pottenger give 1918-06-16 and # 1945-11-18, but the Austrian Federal Office of Metrology and # Surveying (BEV) gives 1918-09-16 and for Vienna gives the "alleged" # date of 1945-04-12 with no time. For the 1980-04-06 transition # Shanks & Pottenger give 02:00, the BEV 00:00. Go with the BEV, # and guess 02:00 for 1945-04-12. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Austria 1920 only - Apr 5 2:00s 1:00 S Rule Austria 1920 only - Sep 13 2:00s 0 - Rule Austria 1946 only - Apr 14 2:00s 1:00 S Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 - Rule Austria 1947 only - Apr 6 2:00s 1:00 S Rule Austria 1948 only - Apr 18 2:00s 1:00 S Rule Austria 1980 only - Apr 6 0:00 1:00 S Rule Austria 1980 only - Sep 28 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Vienna 1:05:21 - LMT 1893 Apr 1:00 C-Eur CE%sT 1920 1:00 Austria CE%sT 1940 Apr 1 2:00s 1:00 C-Eur CE%sT 1945 Apr 2 2:00s 1:00 1:00 CEST 1945 Apr 12 2:00s 1:00 - CET 1946 1:00 Austria CE%sT 1981 1:00 EU CE%sT # Belarus # From Yauhen Kharuzhy (2011-09-16): # By latest Belarus government act Europe/Minsk timezone was changed to # GMT+3 without DST (was GMT+2 with DST). # # Sources (Russian language): # http://www.belta.by/ru/all_news/society/V-Belarusi-otmenjaetsja-perexod-na-sezonnoe-vremja_i_572952.html # http://naviny.by/rubrics/society/2011/09/16/ic_articles_116_175144/ # http://news.tut.by/society/250578.html # # From Alexander Bokovoy (2014-10-09): # Belarussian government decided against changing to winter time.... # http://eng.belta.by/all_news/society/Belarus-decides-against-adjusting-time-in-Russias-wake_i_76335.html # From Paul Eggert (2014-10-08): # Hence Belarus can share time zone abbreviations with Moscow again. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Minsk 1:50:16 - LMT 1880 1:50 - MMT 1924 May 2 # Minsk Mean Time 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Jun 28 1:00 C-Eur CE%sT 1944 Jul 3 3:00 Russia MSK/MSD 1990 3:00 - MSK 1991 Mar 31 2:00s 2:00 1:00 EEST 1991 Sep 29 2:00s 2:00 - EET 1992 Mar 29 0:00s 2:00 1:00 EEST 1992 Sep 27 0:00s 2:00 Russia EE%sT 2011 Mar 27 2:00s 3:00 - FET 2014 Oct 26 1:00s 3:00 - MSK # Belgium # # From Paul Eggert (1997-07-02): # Entries from 1918 through 1991 are taken from: # Annuaire de L'Observatoire Royal de Belgique, # Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe année, 1991 # (Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC), # pp 8-9. # LMT before 1892 was 0:17:30, according to the official journal of Belgium: # Moniteur Belge, Samedi 30 Avril 1892, N.121. # Thanks to Pascal Delmoitie for these references. # The 1918 rules are listed for completeness; they apply to unoccupied Belgium. # Assume Brussels switched to WET in 1918 when the armistice took effect. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Belgium 1918 only - Mar 9 0:00s 1:00 S Rule Belgium 1918 1919 - Oct Sat>=1 23:00s 0 - Rule Belgium 1919 only - Mar 1 23:00s 1:00 S Rule Belgium 1920 only - Feb 14 23:00s 1:00 S Rule Belgium 1920 only - Oct 23 23:00s 0 - Rule Belgium 1921 only - Mar 14 23:00s 1:00 S Rule Belgium 1921 only - Oct 25 23:00s 0 - Rule Belgium 1922 only - Mar 25 23:00s 1:00 S Rule Belgium 1922 1927 - Oct Sat>=1 23:00s 0 - Rule Belgium 1923 only - Apr 21 23:00s 1:00 S Rule Belgium 1924 only - Mar 29 23:00s 1:00 S Rule Belgium 1925 only - Apr 4 23:00s 1:00 S # DSH writes that a royal decree of 1926-02-22 specified the Sun following 3rd # Sat in Apr (except if it's Easter, in which case it's one Sunday earlier), # to Sun following 1st Sat in Oct, and that a royal decree of 1928-09-15 # changed the transition times to 02:00 GMT. Rule Belgium 1926 only - Apr 17 23:00s 1:00 S Rule Belgium 1927 only - Apr 9 23:00s 1:00 S Rule Belgium 1928 only - Apr 14 23:00s 1:00 S Rule Belgium 1928 1938 - Oct Sun>=2 2:00s 0 - Rule Belgium 1929 only - Apr 21 2:00s 1:00 S Rule Belgium 1930 only - Apr 13 2:00s 1:00 S Rule Belgium 1931 only - Apr 19 2:00s 1:00 S Rule Belgium 1932 only - Apr 3 2:00s 1:00 S Rule Belgium 1933 only - Mar 26 2:00s 1:00 S Rule Belgium 1934 only - Apr 8 2:00s 1:00 S Rule Belgium 1935 only - Mar 31 2:00s 1:00 S Rule Belgium 1936 only - Apr 19 2:00s 1:00 S Rule Belgium 1937 only - Apr 4 2:00s 1:00 S Rule Belgium 1938 only - Mar 27 2:00s 1:00 S Rule Belgium 1939 only - Apr 16 2:00s 1:00 S Rule Belgium 1939 only - Nov 19 2:00s 0 - Rule Belgium 1940 only - Feb 25 2:00s 1:00 S Rule Belgium 1944 only - Sep 17 2:00s 0 - Rule Belgium 1945 only - Apr 2 2:00s 1:00 S Rule Belgium 1945 only - Sep 16 2:00s 0 - Rule Belgium 1946 only - May 19 2:00s 1:00 S Rule Belgium 1946 only - Oct 7 2:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Brussels 0:17:30 - LMT 1880 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT 0:00 - WET 1914 Nov 8 1:00 - CET 1916 May 1 0:00 1:00 C-Eur CE%sT 1918 Nov 11 11:00u 0:00 Belgium WE%sT 1940 May 20 2:00s 1:00 C-Eur CE%sT 1944 Sep 3 1:00 Belgium CE%sT 1977 1:00 EU CE%sT # Bosnia and Herzegovina # See Europe/Belgrade. # Bulgaria # # From Plamen Simenov via Steffen Thorsen (1999-09-09): # A document of Government of Bulgaria (No.94/1997) says: # EET -> EETDST is in 03:00 Local time in last Sunday of March ... # EETDST -> EET is in 04:00 Local time in last Sunday of October # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Bulg 1979 only - Mar 31 23:00 1:00 S Rule Bulg 1979 only - Oct 1 1:00 0 - Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S Rule Bulg 1980 only - Sep 29 1:00 0 - Rule Bulg 1981 only - Sep 27 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Sofia 1:33:16 - LMT 1880 1:56:56 - IMT 1894 Nov 30 # Istanbul MT? 2:00 - EET 1942 Nov 2 3:00 1:00 C-Eur CE%sT 1945 1:00 - CET 1945 Apr 2 3:00 2:00 - EET 1979 Mar 31 23:00 2:00 Bulg EE%sT 1982 Sep 26 2:00 2:00 C-Eur EE%sT 1991 2:00 E-Eur EE%sT 1997 2:00 EU EE%sT # Croatia # See Europe/Belgrade. # Cyprus # Please see the 'asia' file for Asia/Nicosia. # Czech Republic # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Czech 1945 only - Apr 8 2:00s 1:00 S Rule Czech 1945 only - Nov 18 2:00s 0 - Rule Czech 1946 only - May 6 2:00s 1:00 S Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 - Rule Czech 1947 only - Apr 20 2:00s 1:00 S Rule Czech 1948 only - Apr 18 2:00s 1:00 S Rule Czech 1949 only - Apr 9 2:00s 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Prague 0:57:44 - LMT 1850 0:57:44 - PMT 1891 Oct # Prague Mean Time 1:00 C-Eur CE%sT 1944 Sep 17 2:00s 1:00 Czech CE%sT 1979 1:00 EU CE%sT # Use Europe/Prague also for Slovakia. # Denmark, Faroe Islands, and Greenland # From Jesper Nørgaard Welen (2005-04-26): # http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law # [introducing standard time] was in effect from 1894-01-01.... # The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL # confirms this, and states that the law was put forth 1893-03-29. # # The EU treaty with effect from 1973: # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL # # This provoked a new law from 1974 to make possible summer time changes # in subsequent decrees with the law # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19740022330-REGL # # It seems however that no decree was set forward until 1980. I have # not found any decree, but in another related law, the effecting DST # changes are stated explicitly to be from 1980-04-06 at 02:00 to # 1980-09-28 at 02:00. If this is true, this differs slightly from # the EU rule in that DST runs to 02:00, not 03:00. We don't know # when Denmark began using the EU rule correctly, but we have only # confirmation of the 1980-time, so I presume it was correct in 1981: # The law is about the management of the extra hour, concerning # working hours reported and effect on obligatory-rest rules (which # was suspended on that night): # http://www.retsinfo.dk/_GETDOCI_/ACCN/C19801120554-REGL # From Jesper Nørgaard Welen (2005-06-11): # The Herning Folkeblad (1980-09-26) reported that the night between # Saturday and Sunday the clock is set back from three to two. # From Paul Eggert (2005-06-11): # Hence the "02:00" of the 1980 law refers to standard time, not # wall-clock time, and so the EU rules were in effect in 1980. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Denmark 1916 only - May 14 23:00 1:00 S Rule Denmark 1916 only - Sep 30 23:00 0 - Rule Denmark 1940 only - May 15 0:00 1:00 S Rule Denmark 1945 only - Apr 2 2:00s 1:00 S Rule Denmark 1945 only - Aug 15 2:00s 0 - Rule Denmark 1946 only - May 1 2:00s 1:00 S Rule Denmark 1946 only - Sep 1 2:00s 0 - Rule Denmark 1947 only - May 4 2:00s 1:00 S Rule Denmark 1947 only - Aug 10 2:00s 0 - Rule Denmark 1948 only - May 9 2:00s 1:00 S Rule Denmark 1948 only - Aug 8 2:00s 0 - # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Copenhagen 0:50:20 - LMT 1890 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT 1:00 Denmark CE%sT 1942 Nov 2 2:00s 1:00 C-Eur CE%sT 1945 Apr 2 2:00 1:00 Denmark CE%sT 1980 1:00 EU CE%sT Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn 0:00 - WET 1981 0:00 EU WE%sT # # From Paul Eggert (2004-10-31): # During World War II, Germany maintained secret manned weather stations in # East Greenland and Franz Josef Land, but we don't know their time zones. # My source for this is Wilhelm Dege's book mentioned under Svalbard. # # From Paul Eggert (2006-03-22): # Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01, # and left the EU on 1985-02-01. It therefore should have been using EU # rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb # used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU # rules since at least 1991. Assume EU rules since 1980. # From Gwillim Law (2001-06-06), citing # (2001-03-15), # and with translations corrected by Steffen Thorsen: # # Greenland has four local times, and the relation to UTC # is according to the following time line: # # The military zone near Thule UTC-4 # Standard Greenland time UTC-3 # Scoresbysund UTC-1 # Danmarkshavn UTC # # In the military area near Thule and in Danmarkshavn DST will not be # introduced. # From Rives McDow (2001-11-01): # # I correspond regularly with the Dansk Polarcenter, and wrote them at # the time to clarify the situation in Thule. Unfortunately, I have # not heard back from them regarding my recent letter. [But I have # info from earlier correspondence.] # # According to the center, a very small local time zone around Thule # Air Base keeps the time according to UTC-4, implementing daylight # savings using North America rules, changing the time at 02:00 local time.... # # The east coast of Greenland north of the community of Scoresbysund # uses UTC in the same way as in Iceland, year round, with no dst. # There are just a few stations on this coast, including the # Danmarkshavn ICAO weather station mentioned in your September 29th # email. The other stations are two sledge patrol stations in # Mestersvig and Daneborg, the air force base at Station Nord, and the # DPC research station at Zackenberg. # # Scoresbysund and two small villages nearby keep time UTC-1 and use # the same daylight savings time period as in West Greenland (Godthåb). # # The rest of Greenland, including Godthåb (this area, although it # includes central Greenland, is known as west Greenland), keeps time # UTC-3, with daylight savings methods according to European rules. # # It is common procedure to use UTC 0 in the wilderness of East and # North Greenland, because it is mainly Icelandic aircraft operators # maintaining traffic in these areas. However, the official status of # this area is that it sticks with Godthåb time. This area might be # considered a dual time zone in some respects because of this. # From Rives McDow (2001-11-19): # I heard back from someone stationed at Thule; the time change took place # there at 2:00 AM. # From Paul Eggert (2006-03-22): # From 1997 on the CIA map shows Danmarkshavn on GMT; # the 1995 map as like Godthåb. # For lack of better info, assume they were like Godthåb before 1996. # startkart.no says Thule does not observe DST, but this is clearly an error, # so go with Shanks & Pottenger for Thule transitions until this year. # For 2007 on assume Thule will stay in sync with US DST rules. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D Rule Thule 1991 1992 - Sep lastSun 2:00 0 S Rule Thule 1993 2006 - Apr Sun>=1 2:00 1:00 D Rule Thule 1993 2006 - Oct lastSun 2:00 0 S Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D Rule Thule 2007 max - Nov Sun>=1 2:00 0 S # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28 -3:00 - WGT 1980 Apr 6 2:00 -3:00 EU WG%sT 1996 0:00 - GMT Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit -2:00 - CGT 1980 Apr 6 2:00 -2:00 C-Eur CG%sT 1981 Mar 29 -1:00 EU EG%sT Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk -3:00 - WGT 1980 Apr 6 2:00 -3:00 EU WG%sT Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base -4:00 Thule A%sT # Estonia # From Peter Ilieve (1994-10-15): # A relative in Tallinn confirms the accuracy of the data for 1989 onwards # [through 1994] and gives the legal authority for it, # a regulation of the Government of Estonia, No. 111 of 1989.... # # From Peter Ilieve (1996-10-28): # [IATA SSIM (1992/1996) claims that the Baltic republics switch at 01:00s, # but a relative confirms that Estonia still switches at 02:00s, writing:] # "I do not [know] exactly but there are some little different # (confusing) rules for International Air and Railway Transport Schedules # conversion in Sunday connected with end of summer time in Estonia.... # A discussion is running about the summer time efficiency and effect on # human physiology. It seems that Estonia maybe will not change to # summer time next spring." # From Peter Ilieve (1998-11-04), heavily edited: # The 1998-09-22 Estonian time law # http://trip.rk.ee/cgi-bin/thw?${BASE}=akt&${OOHTML}=rtd&TA=1998&TO=1&AN=1390 # refers to the Eighth Directive and cites the association agreement between # the EU and Estonia, ratified by the Estonian law (RT II 1995, 22-27, 120). # # I also asked [my relative] whether they use any standard abbreviation # for their standard and summer times. He says no, they use "suveaeg" # (summer time) and "talveaeg" (winter time). # From The Baltic Times (1999-09-09) # via Steffen Thorsen: # This year will mark the last time Estonia shifts to summer time, # a council of the ruling coalition announced Sept. 6.... # But what this could mean for Estonia's chances of joining the European # Union are still unclear. In 1994, the EU declared summer time compulsory # for all member states until 2001. Brussels has yet to decide what to do # after that. # From Mart Oruaas (2000-01-29): # Regulation no. 301 (1999-10-12) obsoletes previous regulation # no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all # the year round. The regulation is effective 1999-11-01. # From Toomas Soome (2002-02-21): # The Estonian government has changed once again timezone politics. # Now we are using again EU rules. # # From Urmet Jänes (2002-03-28): # The legislative reference is Government decree No. 84 on 2002-02-21. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time 1:00 C-Eur CE%sT 1919 Jul 1:39:00 - TMT 1921 May 2:00 - EET 1940 Aug 6 3:00 - MSK 1941 Sep 15 1:00 C-Eur CE%sT 1944 Sep 22 3:00 Russia MSK/MSD 1989 Mar 26 2:00s 2:00 1:00 EEST 1989 Sep 24 2:00s 2:00 C-Eur EE%sT 1998 Sep 22 2:00 EU EE%sT 1999 Nov 1 2:00 - EET 2002 Feb 21 2:00 EU EE%sT # Finland # From Hannu Strang (1994-09-25 06:03:37 UTC): # Well, here in Helsinki we're just changing from summer time to regular one, # and it's supposed to change at 4am... # From Janne Snabb (2010-07-15): # # I noticed that the Finland data is not accurate for years 1981 and 1982. # During these two first trial years the DST adjustment was made one hour # earlier than in forthcoming years. Starting 1983 the adjustment was made # according to the central European standards. # # This is documented in Heikki Oja: Aikakirja 2007, published by The Almanac # Office of University of Helsinki, ISBN 952-10-3221-9, available online (in # Finnish) at # http://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf # # Page 105 (56 in PDF version) has a handy table of all past daylight savings # transitions. It is easy enough to interpret without Finnish skills. # # This is also confirmed by Finnish Broadcasting Company's archive at: # http://www.yle.fi/elavaarkisto/?s=s&g=1&ag=5&t=&a=3401 # # The news clip from 1981 says that "the time between 2 and 3 o'clock does not # exist tonight." # From Konstantin Hyppönen (2014-06-13): # [Heikki Oja's book Aikakirja 2013] # http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf # pages 104-105, including a scan from a newspaper published on Apr 2 1942 # say that ... [o]n Apr 2 1942, 24 o'clock (which means Apr 3 1942, # 00:00), clocks were moved one hour forward. The newspaper # mentions "on the night from Thursday to Friday".... # On Oct 4 1942, clocks were moved at 1:00 one hour backwards. # # From Paul Eggert (2014-06-14): # Go with Oja over Shanks. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Finland 1942 only - Apr 2 24:00 1:00 S Rule Finland 1942 only - Oct 4 1:00 0 - Rule Finland 1981 1982 - Mar lastSun 2:00 1:00 S Rule Finland 1981 1982 - Sep lastSun 3:00 0 - # Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document); # round to nearest. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31 1:39:49 - HMT 1921 May # Helsinki Mean Time 2:00 Finland EE%sT 1983 2:00 EU EE%sT # Åland Is Link Europe/Helsinki Europe/Mariehamn # France # From Ciro Discepolo (2000-12-20): # # Henri Le Corre, Régimes horaires pour le monde entier, Éditions # Traditionnelles - Paris 2 books, 1993 # # Gabriel, Traité de l'heure dans le monde, Guy Trédaniel, # Paris, 1991 # # Françoise Gauquelin, Problèmes de l'heure résolus en astrologie, # Guy Trédaniel, Paris 1987 # # Shank & Pottenger seem to use '24:00' ambiguously; resolve it with Whitman. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule France 1916 only - Jun 14 23:00s 1:00 S Rule France 1916 1919 - Oct Sun>=1 23:00s 0 - Rule France 1917 only - Mar 24 23:00s 1:00 S Rule France 1918 only - Mar 9 23:00s 1:00 S Rule France 1919 only - Mar 1 23:00s 1:00 S Rule France 1920 only - Feb 14 23:00s 1:00 S Rule France 1920 only - Oct 23 23:00s 0 - Rule France 1921 only - Mar 14 23:00s 1:00 S Rule France 1921 only - Oct 25 23:00s 0 - Rule France 1922 only - Mar 25 23:00s 1:00 S # DSH writes that a law of 1923-05-24 specified 3rd Sat in Apr at 23:00 to 1st # Sat in Oct at 24:00; and that in 1930, because of Easter, the transitions # were Apr 12 and Oct 5. Go with Shanks & Pottenger. Rule France 1922 1938 - Oct Sat>=1 23:00s 0 - Rule France 1923 only - May 26 23:00s 1:00 S Rule France 1924 only - Mar 29 23:00s 1:00 S Rule France 1925 only - Apr 4 23:00s 1:00 S Rule France 1926 only - Apr 17 23:00s 1:00 S Rule France 1927 only - Apr 9 23:00s 1:00 S Rule France 1928 only - Apr 14 23:00s 1:00 S Rule France 1929 only - Apr 20 23:00s 1:00 S Rule France 1930 only - Apr 12 23:00s 1:00 S Rule France 1931 only - Apr 18 23:00s 1:00 S Rule France 1932 only - Apr 2 23:00s 1:00 S Rule France 1933 only - Mar 25 23:00s 1:00 S Rule France 1934 only - Apr 7 23:00s 1:00 S Rule France 1935 only - Mar 30 23:00s 1:00 S Rule France 1936 only - Apr 18 23:00s 1:00 S Rule France 1937 only - Apr 3 23:00s 1:00 S Rule France 1938 only - Mar 26 23:00s 1:00 S Rule France 1939 only - Apr 15 23:00s 1:00 S Rule France 1939 only - Nov 18 23:00s 0 - Rule France 1940 only - Feb 25 2:00 1:00 S # The French rules for 1941-1944 were not used in Paris, but Shanks & Pottenger # write that they were used in Monaco and in many French locations. # Le Corre writes that the upper limit of the free zone was Arnéguy, Orthez, # Mont-de-Marsan, Bazas, Langon, Lamothe-Montravel, Marœuil, La # Rochefoucauld, Champagne-Mouton, La Roche-Posay, La Haye-Descartes, # Loches, Montrichard, Vierzon, Bourges, Moulins, Digoin, # Paray-le-Monial, Montceau-les-Mines, Chalon-sur-Saône, Arbois, # Dole, Morez, St-Claude, and Collonges (Haute-Savoie). Rule France 1941 only - May 5 0:00 2:00 M # Midsummer # Shanks & Pottenger say this transition occurred at Oct 6 1:00, # but go with Denis Excoffier (1997-12-12), # who quotes the Ephémérides astronomiques for 1998 from Bureau des Longitudes # as saying 5/10/41 22hUT. Rule France 1941 only - Oct 6 0:00 1:00 S Rule France 1942 only - Mar 9 0:00 2:00 M Rule France 1942 only - Nov 2 3:00 1:00 S Rule France 1943 only - Mar 29 2:00 2:00 M Rule France 1943 only - Oct 4 3:00 1:00 S Rule France 1944 only - Apr 3 2:00 2:00 M Rule France 1944 only - Oct 8 1:00 1:00 S Rule France 1945 only - Apr 2 2:00 2:00 M Rule France 1945 only - Sep 16 3:00 0 - # Shanks & Pottenger give Mar 28 2:00 and Sep 26 3:00; # go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT. Rule France 1976 only - Mar 28 1:00 1:00 S Rule France 1976 only - Sep 26 1:00 0 - # Shanks & Pottenger give 0:09:20 for Paris Mean Time, and Whitman 0:09:05, # but Howse quotes the actual French legislation as saying 0:09:21. # Go with Howse. Howse writes that the time in France was officially based # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01 0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT # Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre. 0:00 France WE%sT 1940 Jun 14 23:00 # Le Corre says Paris stuck with occupied-France time after the liberation; # go with Shanks & Pottenger. 1:00 C-Eur CE%sT 1944 Aug 25 0:00 France WE%sT 1945 Sep 16 3:00 1:00 France CE%sT 1977 1:00 EU CE%sT # Germany # From Markus Kuhn (1998-09-29): # The German time zone web site by the Physikalisch-Technische # Bundesanstalt contains DST information back to 1916. # [See tz-link.htm for the URL.] # From Jörg Schilling (2002-10-23): # In 1945, Berlin was switched to Moscow Summer time (GMT+4) by # http://www.dhm.de/lemo/html/biografien/BersarinNikolai/ # General [Nikolai] Bersarin. # From Paul Eggert (2003-03-08): # http://www.parlament-berlin.de/pds-fraktion.nsf/727459127c8b66ee8525662300459099/defc77cb784f180ac1256c2b0030274b/$FILE/bersarint.pdf # says that Bersarin issued an order to use Moscow time on May 20. # However, Moscow did not observe daylight saving in 1945, so # this was equivalent to CEMT (GMT+3), not GMT+4. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Germany 1946 only - Apr 14 2:00s 1:00 S Rule Germany 1946 only - Oct 7 2:00s 0 - Rule Germany 1947 1949 - Oct Sun>=1 2:00s 0 - # http://www.ptb.de/de/org/4/44/441/salt.htm says the following transition # occurred at 3:00 MEZ, not the 2:00 MEZ given in Shanks & Pottenger. # Go with the PTB. Rule Germany 1947 only - Apr 6 3:00s 1:00 S Rule Germany 1947 only - May 11 2:00s 2:00 M Rule Germany 1947 only - Jun 29 3:00 1:00 S Rule Germany 1948 only - Apr 18 2:00s 1:00 S Rule Germany 1949 only - Apr 10 2:00s 1:00 S Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer Rule SovietZone 1945 only - Sep 24 3:00 1:00 S Rule SovietZone 1945 only - Nov 18 2:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Berlin 0:53:28 - LMT 1893 Apr 1:00 C-Eur CE%sT 1945 May 24 2:00 1:00 SovietZone CE%sT 1946 1:00 Germany CE%sT 1980 1:00 EU CE%sT # From Tobias Conradi (2011-09-12): # Büsingen , surrounded by the Swiss canton # Schaffhausen, did not start observing DST in 1980 as the rest of DE # (West Germany at that time) and DD (East Germany at that time) did. # DD merged into DE, the area is currently covered by code DE in ISO 3166-1, # which in turn is covered by the zone Europe/Berlin. # # Source for the time in Büsingen 1980: # http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3 # From Arthur David Olson (2012-03-03): # Büsingen and Zurich have shared clocks since 1970. Link Europe/Zurich Europe/Busingen # Georgia # Please see the "asia" file for Asia/Tbilisi. # Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni) # is in Europe. Our reference location Tbilisi is in the Asian part. # Gibraltar # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s 0:00 GB-Eire %s 1957 Apr 14 2:00 1:00 - CET 1982 1:00 EU CE%sT # Greece # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Whitman gives 1932 Jul 5 - Nov 1; go with Shanks & Pottenger. Rule Greece 1932 only - Jul 7 0:00 1:00 S Rule Greece 1932 only - Sep 1 0:00 0 - # Whitman gives 1941 Apr 25 - ?; go with Shanks & Pottenger. Rule Greece 1941 only - Apr 7 0:00 1:00 S # Whitman gives 1942 Feb 2 - ?; go with Shanks & Pottenger. Rule Greece 1942 only - Nov 2 3:00 0 - Rule Greece 1943 only - Mar 30 0:00 1:00 S Rule Greece 1943 only - Oct 4 0:00 0 - # Whitman gives 1944 Oct 3 - Oct 31; go with Shanks & Pottenger. Rule Greece 1952 only - Jul 1 0:00 1:00 S Rule Greece 1952 only - Nov 2 0:00 0 - Rule Greece 1975 only - Apr 12 0:00s 1:00 S Rule Greece 1975 only - Nov 26 0:00s 0 - Rule Greece 1976 only - Apr 11 2:00s 1:00 S Rule Greece 1976 only - Oct 10 2:00s 0 - Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 S Rule Greece 1977 only - Sep 26 2:00s 0 - Rule Greece 1978 only - Sep 24 4:00 0 - Rule Greece 1979 only - Apr 1 9:00 1:00 S Rule Greece 1979 only - Sep 29 2:00 0 - Rule Greece 1980 only - Apr 1 0:00 1:00 S Rule Greece 1980 only - Sep 28 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT 2:00 Greece EE%sT 1941 Apr 30 1:00 Greece CE%sT 1944 Apr 4 2:00 Greece EE%sT 1981 # Shanks & Pottenger say it switched to C-Eur in 1981; # go with EU instead, since Greece joined it on Jan 1. 2:00 EU EE%sT # Hungary # From Paul Eggert (2014-07-15): # Dates for 1916-1945 are taken from: # Oross A. Jelen a múlt jövője: a nyári időszámítás Magyarországon 1916-1945. # National Archives of Hungary (2012-10-29). # http://mnl.gov.hu/a_het_dokumentuma/a_nyari_idoszamitas_magyarorszagon_19161945.html # This source does not always give times, which are taken from Shanks # & Pottenger (which disagree about the dates). # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Hungary 1918 only - Apr 1 3:00 1:00 S Rule Hungary 1918 only - Sep 16 3:00 0 - Rule Hungary 1919 only - Apr 15 3:00 1:00 S Rule Hungary 1919 only - Nov 24 3:00 0 - Rule Hungary 1945 only - May 1 23:00 1:00 S Rule Hungary 1945 only - Nov 1 0:00 0 - Rule Hungary 1946 only - Mar 31 2:00s 1:00 S Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 - Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 S Rule Hungary 1950 only - Apr 17 2:00s 1:00 S Rule Hungary 1950 only - Oct 23 2:00s 0 - Rule Hungary 1954 1955 - May 23 0:00 1:00 S Rule Hungary 1954 1955 - Oct 3 0:00 0 - Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 S Rule Hungary 1956 only - Sep lastSun 0:00 0 - Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S Rule Hungary 1957 only - Sep lastSun 3:00 0 - Rule Hungary 1980 only - Apr 6 1:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Budapest 1:16:20 - LMT 1890 Oct 1:00 C-Eur CE%sT 1918 1:00 Hungary CE%sT 1941 Apr 8 1:00 C-Eur CE%sT 1945 1:00 Hungary CE%sT 1980 Sep 28 2:00s 1:00 EU CE%sT # Iceland # # From Adam David (1993-11-06): # The name of the timezone in Iceland for system / mail / news purposes is GMT. # # (1993-12-05): # This material is paraphrased from the 1988 edition of the University of # Iceland Almanak. # # From January 1st, 1908 the whole of Iceland was standardised at 1 hour # behind GMT. Previously, local mean solar time was used in different parts # of Iceland, the almanak had been based on Reykjavik mean solar time which # was 1 hour and 28 minutes behind GMT. # # "first day of winter" referred to [below] means the first day of the 26 weeks # of winter, according to the old icelandic calendar that dates back to the # time the norsemen first settled Iceland. The first day of winter is always # Saturday, but is not dependent on the Julian or Gregorian calendars. # # (1993-12-10): # I have a reference from the Oxford Icelandic-English dictionary for the # beginning of winter, which ties it to the ecclesiastical calendar (and thus # to the julian/gregorian calendar) over the period in question. # the winter begins on the Saturday next before St. Luke's day # (old style), or on St. Luke's day, if a Saturday. # St. Luke's day ought to be traceable from ecclesiastical sources. "old style" # might be a reference to the Julian calendar as opposed to Gregorian, or it # might mean something else (???). # # From Paul Eggert (2014-11-22): # The information below is taken from the 1988 Almanak; see # http://www.almanak.hi.is/klukkan.html # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Iceland 1917 1919 - Feb 19 23:00 1:00 S Rule Iceland 1917 only - Oct 21 1:00 0 - Rule Iceland 1918 1919 - Nov 16 1:00 0 - Rule Iceland 1921 only - Mar 19 23:00 1:00 S Rule Iceland 1921 only - Jun 23 1:00 0 - Rule Iceland 1939 only - Apr 29 23:00 1:00 S Rule Iceland 1939 only - Oct 29 2:00 0 - Rule Iceland 1940 only - Feb 25 2:00 1:00 S Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 - Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 S # 1943-1946 - first Sunday in March until first Sunday in winter Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 S Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 - # 1947-1967 - first Sunday in April until first Sunday in winter Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 S # 1949 and 1967 Oct transitions delayed by 1 week Rule Iceland 1949 only - Oct 30 1:00s 0 - Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - Rule Iceland 1967 only - Oct 29 1:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Reykjavik -1:28 - LMT 1908 -1:00 Iceland IS%sT 1968 Apr 7 1:00s 0:00 - GMT # Italy # # From Paul Eggert (2001-03-06): # Sicily and Sardinia each had their own time zones from 1866 to 1893, # called Palermo Time (+00:53:28) and Cagliari Time (+00:36:32). # During World War II, German-controlled Italy used German time. # But these events all occurred before the 1970 cutoff, # so record only the time in Rome. # # From Paul Eggert (2006-03-22): # For Italian DST we have three sources: Shanks & Pottenger, Whitman, and # F. Pollastri # Day-light Saving Time in Italy (2006-02-03) # http://toi.iriti.cnr.it/uk/ienitlt.html # ('FP' below), taken from an Italian National Electrotechnical Institute # publication. When the three sources disagree, guess who's right, as follows: # # year FP Shanks&P. (S) Whitman (W) Go with: # 1916 06-03 06-03 24:00 06-03 00:00 FP & W # 09-30 09-30 24:00 09-30 01:00 FP; guess 24:00s # 1917 04-01 03-31 24:00 03-31 00:00 FP & S # 09-30 09-29 24:00 09-30 01:00 FP & W # 1918 03-09 03-09 24:00 03-09 00:00 FP & S # 10-06 10-05 24:00 10-06 01:00 FP & W # 1919 03-01 03-01 24:00 03-01 00:00 FP & S # 10-04 10-04 24:00 10-04 01:00 FP; guess 24:00s # 1920 03-20 03-20 24:00 03-20 00:00 FP & S # 09-18 09-18 24:00 10-01 01:00 FP; guess 24:00s # 1944 04-02 04-03 02:00 S (see C-Eur) # 09-16 10-02 03:00 FP; guess 24:00s # 1945 09-14 09-16 24:00 FP; guess 24:00s # 1970 05-21 05-31 00:00 S # 09-20 09-27 00:00 S # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Italy 1916 only - Jun 3 0:00s 1:00 S Rule Italy 1916 only - Oct 1 0:00s 0 - Rule Italy 1917 only - Apr 1 0:00s 1:00 S Rule Italy 1917 only - Sep 30 0:00s 0 - Rule Italy 1918 only - Mar 10 0:00s 1:00 S Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 - Rule Italy 1919 only - Mar 2 0:00s 1:00 S Rule Italy 1920 only - Mar 21 0:00s 1:00 S Rule Italy 1920 only - Sep 19 0:00s 0 - Rule Italy 1940 only - Jun 15 0:00s 1:00 S Rule Italy 1944 only - Sep 17 0:00s 0 - Rule Italy 1945 only - Apr 2 2:00 1:00 S Rule Italy 1945 only - Sep 15 0:00s 0 - Rule Italy 1946 only - Mar 17 2:00s 1:00 S Rule Italy 1946 only - Oct 6 2:00s 0 - Rule Italy 1947 only - Mar 16 0:00s 1:00 S Rule Italy 1947 only - Oct 5 0:00s 0 - Rule Italy 1948 only - Feb 29 2:00s 1:00 S Rule Italy 1948 only - Oct 3 2:00s 0 - Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 S Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 - Rule Italy 1969 only - Jun 1 0:00 1:00 S Rule Italy 1970 only - May 31 0:00 1:00 S Rule Italy 1970 only - Sep lastSun 0:00 0 - Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 S Rule Italy 1971 only - Sep lastSun 1:00 0 - Rule Italy 1972 only - Oct 1 0:00 0 - Rule Italy 1973 only - Jun 3 0:00 1:00 S Rule Italy 1973 1974 - Sep lastSun 0:00 0 - Rule Italy 1974 only - May 26 0:00 1:00 S Rule Italy 1975 only - Jun 1 0:00s 1:00 S Rule Italy 1975 1977 - Sep lastSun 0:00s 0 - Rule Italy 1976 only - May 30 0:00s 1:00 S Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S Rule Italy 1978 only - Oct 1 0:00s 0 - Rule Italy 1979 only - Sep 30 0:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22 0:49:56 - RMT 1893 Nov 1 0:00s # Rome Mean 1:00 Italy CE%sT 1942 Nov 2 2:00s 1:00 C-Eur CE%sT 1944 Jul 1:00 Italy CE%sT 1980 1:00 EU CE%sT Link Europe/Rome Europe/Vatican Link Europe/Rome Europe/San_Marino # Latvia # From Liene Kanepe (1998-09-17): # I asked about this matter Scientific Secretary of the Institute of Astronomy # of The University of Latvia Dr. paed Mr. Ilgonis Vilks. I also searched the # correct data in juridical acts and I found some juridical documents about # changes in the counting of time in Latvia from 1981.... # # Act No.35 of the Council of Ministers of Latvian SSR of 1981-01-22 ... # according to the Act No.925 of the Council of Ministers of USSR of 1980-10-24 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning # the hands of the clock 1 hour forward on 1 April at 00:00 (GMT 31 March 21:00) # and 1 hour backward on the 1 October at 00:00 (GMT 30 September 20:00). # # Act No.592 of the Council of Ministers of Latvian SSR of 1984-09-24 ... # according to the Act No.967 of the Council of Ministers of USSR of 1984-09-13 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning # the hands of the clock 1 hour forward on the last Sunday of March at 02:00 # (GMT 23:00 on the previous day) and 1 hour backward on the last Sunday of # September at 03:00 (GMT 23:00 on the previous day). # # Act No.81 of the Council of Ministers of Latvian SSR of 1989-03-22 ... # according to the Act No.227 of the Council of Ministers of USSR of 1989-03-14 # ...: since the last Sunday of March 1989 in Lithuanian SSR, Latvian SSR, # Estonian SSR and Kaliningrad region of Russian Federation all year round the # time of 2nd time zone (Moscow time minus one hour). On the territory of Latvia # transition to summer time is performed on the last Sunday of March at 02:00 # (GMT 00:00), turning the hands of the clock 1 hour forward. The end of # daylight saving time is performed on the last Sunday of September at 03:00 # (GMT 00:00), turning the hands of the clock 1 hour backward. Exception is # 1989-03-26, when we must not turn the hands of the clock.... # # The Regulations of the Cabinet of Ministers of the Republic of Latvia of # 1997-01-21 on transition to Summer time ... established the same order of # daylight savings time settings as in the States of the European Union. # From Andrei Ivanov (2000-03-06): # This year Latvia will not switch to Daylight Savings Time (as specified in # The Regulations of the Cabinet of Ministers of the Rep. of Latvia of # 29-Feb-2000 (#79) , # in Latvian for subscribers only). # From RFE/RL Newsline # http://www.rferl.org/newsline/2001/01/3-CEE/cee-030101.html # (2001-01-03), noted after a heads-up by Rives McDow: # The Latvian government on 2 January decided that the country will # institute daylight-saving time this spring, LETA reported. # Last February the three Baltic states decided not to turn back their # clocks one hour in the spring.... # Minister of Economy Aigars Kalvītis noted that Latvia had too few # daylight hours and thus decided to comply with a draft European # Commission directive that provides for instituting daylight-saving # time in EU countries between 2002 and 2006. The Latvian government # urged Lithuania and Estonia to adopt a similar time policy, but it # appears that they will not do so.... # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 - # Milne 1899 says Riga was 1:36:28 (Polytechnique House time). # Byalokoz 1919 says Latvia was 1:36:34. # Go with Byalokoz. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Riga 1:36:34 - LMT 1880 1:36:34 - RMT 1918 Apr 15 2:00 # Riga MT 1:36:34 1:00 LST 1918 Sep 16 3:00 # Latvian ST 1:36:34 - RMT 1919 Apr 1 2:00 1:36:34 1:00 LST 1919 May 22 3:00 1:36:34 - RMT 1926 May 11 2:00 - EET 1940 Aug 5 3:00 - MSK 1941 Jul 1:00 C-Eur CE%sT 1944 Oct 13 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s 2:00 1:00 EEST 1989 Sep lastSun 2:00s 2:00 Latvia EE%sT 1997 Jan 21 2:00 EU EE%sT 2000 Feb 29 2:00 - EET 2001 Jan 2 2:00 EU EE%sT # Liechtenstein # From Paul Eggert (2013-09-09): # Shanks & Pottenger say Vaduz is like Zurich. # From Alois Treindl (2013-09-18): # http://www.eliechtensteinensia.li/LIJ/1978/1938-1978/1941.pdf # ... confirms on p. 6 that Liechtenstein followed Switzerland in 1941 and 1942. # I ... translate only the last two paragraphs: # ... during second world war, in the years 1941 and 1942, Liechtenstein # introduced daylight saving time, adapting to Switzerland. From 1943 on # central European time was in force throughout the year. # From a report of the duke's government to the high council, # regarding the introduction of a time law, of 31 May 1977. Link Europe/Zurich Europe/Vaduz # Lithuania # From Paul Eggert (1996-11-22): # IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is # known to be wrong about Estonia and Latvia, assume it's wrong here too. # From Marius Gedminas (1998-08-07): # I would like to inform that in this year Lithuanian time zone # (Europe/Vilnius) was changed. # From ELTA No. 972 (2582) (1999-09-29) , # via Steffen Thorsen: # Lithuania has shifted back to the second time zone (GMT plus two hours) # to be valid here starting from October 31, # as decided by the national government on Wednesday.... # The Lithuanian government also announced plans to consider a # motion to give up shifting to summer time in spring, as it was # already done by Estonia. # From the Fact File, Lithuanian State Department of Tourism # (2000-03-27): # Local time is GMT+2 hours ..., no daylight saving. # From a user via Klaus Marten (2003-02-07): # As a candidate for membership of the European Union, Lithuania will # observe Summer Time in 2003, changing its clocks at the times laid # down in EU Directive 2000/84 of 19.I.01 (i.e. at the same times as its # neighbour Latvia). The text of the Lithuanian government Order of # 7.XI.02 to this effect can be found at # http://www.lrvk.lt/nut/11/n1749.htm # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Vilnius 1:41:16 - LMT 1880 1:24:00 - WMT 1917 # Warsaw Mean Time 1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time 1:00 - CET 1920 Jul 12 2:00 - EET 1920 Oct 9 1:00 - CET 1940 Aug 3 3:00 - MSK 1941 Jun 24 1:00 C-Eur CE%sT 1944 Aug 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 1:00 EEST 1991 Sep 29 2:00s 2:00 C-Eur EE%sT 1998 2:00 - EET 1998 Mar 29 1:00u 1:00 EU CE%sT 1999 Oct 31 1:00u 2:00 - EET 2003 Jan 1 2:00 EU EE%sT # Luxembourg # Whitman disagrees with most of these dates in minor ways; # go with Shanks & Pottenger. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Lux 1916 only - May 14 23:00 1:00 S Rule Lux 1916 only - Oct 1 1:00 0 - Rule Lux 1917 only - Apr 28 23:00 1:00 S Rule Lux 1917 only - Sep 17 1:00 0 - Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S Rule Lux 1918 only - Sep Mon>=15 2:00s 0 - Rule Lux 1919 only - Mar 1 23:00 1:00 S Rule Lux 1919 only - Oct 5 3:00 0 - Rule Lux 1920 only - Feb 14 23:00 1:00 S Rule Lux 1920 only - Oct 24 2:00 0 - Rule Lux 1921 only - Mar 14 23:00 1:00 S Rule Lux 1921 only - Oct 26 2:00 0 - Rule Lux 1922 only - Mar 25 23:00 1:00 S Rule Lux 1922 only - Oct Sun>=2 1:00 0 - Rule Lux 1923 only - Apr 21 23:00 1:00 S Rule Lux 1923 only - Oct Sun>=2 2:00 0 - Rule Lux 1924 only - Mar 29 23:00 1:00 S Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 - Rule Lux 1925 only - Apr 5 23:00 1:00 S Rule Lux 1926 only - Apr 17 23:00 1:00 S Rule Lux 1927 only - Apr 9 23:00 1:00 S Rule Lux 1928 only - Apr 14 23:00 1:00 S Rule Lux 1929 only - Apr 20 23:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun 1:00 Lux CE%sT 1918 Nov 25 0:00 Lux WE%sT 1929 Oct 6 2:00s 0:00 Belgium WE%sT 1940 May 14 3:00 1:00 C-Eur WE%sT 1944 Sep 18 3:00 1:00 Belgium CE%sT 1977 1:00 EU CE%sT # Macedonia # See Europe/Belgrade. # Malta # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Malta 1973 only - Mar 31 0:00s 1:00 S Rule Malta 1973 only - Sep 29 0:00s 0 - Rule Malta 1974 only - Apr 21 0:00s 1:00 S Rule Malta 1974 only - Sep 16 0:00s 0 - Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 - Rule Malta 1980 only - Mar 31 2:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta 1:00 Italy CE%sT 1942 Nov 2 2:00s 1:00 C-Eur CE%sT 1945 Apr 2 2:00s 1:00 Italy CE%sT 1973 Mar 31 1:00 Malta CE%sT 1981 1:00 EU CE%sT # Moldova # From Paul Eggert (2006-03-22): # A previous version of this database followed Shanks & Pottenger, who write # that Tiraspol switched to Moscow time on 1992-01-19 at 02:00. # However, this is most likely an error, as Moldova declared independence # on 1991-08-27 (the 1992-01-19 date is that of a Russian decree). # In early 1992 there was large-scale interethnic violence in the area # and it's possible that some Russophones continued to observe Moscow time. # But [two people] separately reported via # Jesper Nørgaard that as of 2001-01-24 Tiraspol was like Chisinau. # The Tiraspol entry has therefore been removed for now. # # From Alexander Krivenyshev (2011-10-17): # Pridnestrovian Moldavian Republic (PMR, also known as # "Pridnestrovie") has abolished seasonal clock change (no transition # to the Winter Time). # # News (in Russian): # http://www.kyivpost.ua/russia/news/pridnestrove-otkazalos-ot-perehoda-na-zimnee-vremya-30954.html # http://www.allmoldova.com/moldova-news/1249064116.html # # The substance of this change (reinstatement of the Tiraspol entry) # is from a patch from Petr Machata (2011-10-17) # # From Tim Parenti (2011-10-19) # In addition, being situated at +4651+2938 would give Tiraspol # a pre-1880 LMT offset of 1:58:32. # # (which agrees with the earlier entry that had been removed) # # From Alexander Krivenyshev (2011-10-26) # NO need to divide Moldova into two timezones at this point. # As of today, Transnistria (Pridnestrovie)- Tiraspol reversed its own # decision to abolish DST this winter. # Following Moldova and neighboring Ukraine- Transnistria (Pridnestrovie)- # Tiraspol will go back to winter time on October 30, 2011. # News from Moldova (in russian): # http://ru.publika.md/link_317061.html # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Chisinau 1:55:20 - LMT 1880 1:55 - CMT 1918 Feb 15 # Chisinau MT 1:44:24 - BMT 1931 Jul 24 # Bucharest MT 2:00 Romania EE%sT 1940 Aug 15 2:00 1:00 EEST 1941 Jul 17 1:00 C-Eur CE%sT 1944 Aug 24 3:00 Russia MSK/MSD 1990 3:00 - MSK 1990 May 6 2:00 - EET 1991 2:00 Russia EE%sT 1992 2:00 E-Eur EE%sT 1997 # See Romania commentary for the guessed 1997 transition to EU rules. 2:00 EU EE%sT # Monaco # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 0:00 France WE%sT 1945 Sep 16 3:00 1:00 France CE%sT 1977 1:00 EU CE%sT # Montenegro # See Europe/Belgrade. # Netherlands # Howse writes that the Netherlands' railways used GMT between 1892 and 1940, # but for other purposes the Netherlands used Amsterdam mean time. # However, Robert H. van Gent writes (2001-04-01): # Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00 # Amsterdam mean time) onwards, the whole of the Netherlands (including # the Dutch railways) was required by law to observe Amsterdam mean time # (19 minutes 32.13 seconds ahead of GMT). This had already been the # common practice (except for the railways) for many decades but it was # not until 1909 when the Dutch government finally defined this by law. # On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and # was generally known as Dutch Time ("Nederlandse Tijd"). # # (2001-04-08): # 1892-05-01 was the date when the Dutch railways were by law required to # observe GMT while the remainder of the Netherlands adhered to the common # practice of following Amsterdam mean time. # # (2001-04-09): # In 1835 the authorities of the province of North Holland requested the # municipal authorities of the towns and cities in the province to observe # Amsterdam mean time but I do not know in how many cases this request was # actually followed. # # From 1852 onwards the Dutch telegraph offices were by law required to # observe Amsterdam mean time. As the time signals from the observatory of # Leiden were also distributed by the telegraph system, I assume that most # places linked up with the telegraph (and railway) system automatically # adopted Amsterdam mean time. # # Although the early Dutch railway companies initially observed a variety # of times, most of them had adopted Amsterdam mean time by 1858 but it # was not until 1866 when they were all required by law to observe # Amsterdam mean time. # The data entries before 1945 are taken from # http://www.phys.uu.nl/~vgent/wettijd/wettijd.htm # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time Rule Neth 1917 only - Apr 16 2:00s 1:00 NST Rule Neth 1917 only - Sep 17 2:00s 0 AMT Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST # From 1926 through 1939 DST began 05-15, except that it was delayed by a week # in years when 05-15 fell in the Pentecost weekend. Rule Neth 1926 1931 - May 15 2:00s 1:00 NST Rule Neth 1932 only - May 22 2:00s 1:00 NST Rule Neth 1933 1936 - May 15 2:00s 1:00 NST Rule Neth 1937 only - May 22 2:00s 1:00 NST Rule Neth 1937 only - Jul 1 0:00 1:00 S Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 - Rule Neth 1938 1939 - May 15 2:00s 1:00 S Rule Neth 1945 only - Apr 2 2:00s 1:00 S Rule Neth 1945 only - Sep 16 2:00s 0 - # # Amsterdam Mean Time was +00:19:32.13 exactly, but the .13 is omitted # below because the current format requires GMTOFF to be an integer. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Amsterdam 0:19:32 - LMT 1835 0:19:32 Neth %s 1937 Jul 1 0:20 Neth NE%sT 1940 May 16 0:00 # Dutch Time 1:00 C-Eur CE%sT 1945 Apr 2 2:00 1:00 Neth CE%sT 1977 1:00 EU CE%sT # Norway # http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks & # Pottenger. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Norway 1916 only - May 22 1:00 1:00 S Rule Norway 1916 only - Sep 30 0:00 0 - Rule Norway 1945 only - Apr 2 2:00s 1:00 S Rule Norway 1945 only - Oct 1 2:00s 0 - Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - Rule Norway 1965 only - Apr 25 2:00s 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 1:00 Norway CE%sT 1940 Aug 10 23:00 1:00 C-Eur CE%sT 1945 Apr 2 2:00 1:00 Norway CE%sT 1980 1:00 EU CE%sT # Svalbard & Jan Mayen # From Steffen Thorsen (2001-05-01): # Although I could not find it explicitly, it seems that Jan Mayen and # Svalbard have been using the same time as Norway at least since the # time they were declared as parts of Norway. Svalbard was declared # as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan # Mayen by law of 1930-02-27 no 2, section 2. (From # and # ). The law/regulation # for normal/standard time in Norway is from 1894-06-29 no 1 (came # into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a # part of this law since 1925/1930. (From # ) I have not been # able to find if Jan Mayen used a different time zone (e.g. -0100) # before 1930. Jan Mayen has only been "inhabited" since 1921 by # Norwegian meteorologists and maybe used the same time as Norway ever # since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since # before 1895, and therefore probably changed the local time somewhere # between 1895 and 1925 (inclusive). # From Paul Eggert (2013-09-04): # # Actually, Jan Mayen was never occupied by Germany during World War II, # so it must have diverged from Oslo time during the war, as Oslo was # keeping Berlin time. # # says that the meteorologists # burned down their station in 1940 and left the island, but returned in # 1941 with a small Norwegian garrison and continued operations despite # frequent air attacks from Germans. In 1943 the Americans established a # radiolocating station on the island, called "Atlantic City". Possibly # the UT offset changed during the war, but I think it unlikely that # Jan Mayen used German daylight-saving rules. # # Svalbard is more complicated, as it was raided in August 1941 by an # Allied party that evacuated the civilian population to England (says # ). The Svalbard FAQ # says that the Germans were # expelled on 1942-05-14. However, small parties of Germans did return, # and according to Wilhelm Dege's book "War North of 80" (1954) # http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html # the German armed forces at the Svalbard weather station code-named # Haudegen did not surrender to the Allies until September 1945. # # All these events predate our cutoff date of 1970, so use Europe/Oslo # for these regions. Link Europe/Oslo Arctic/Longyearbyen # Poland # The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20), # pp 1-2. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Poland 1918 1919 - Sep 16 2:00s 0 - Rule Poland 1919 only - Apr 15 2:00s 1:00 S Rule Poland 1944 only - Apr 3 2:00s 1:00 S # Whitman gives 1944 Nov 30; go with Shanks & Pottenger. Rule Poland 1944 only - Oct 4 2:00 0 - # For 1944-1948 Whitman gives the previous day; go with Shanks & Pottenger. Rule Poland 1945 only - Apr 29 0:00 1:00 S Rule Poland 1945 only - Nov 1 0:00 0 - # For 1946 on the source is Kazimierz Borkowski, # Toruń Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U., # http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1 # Thanks to Przemysław Augustyniak (2005-05-28) for this reference. # He also gives these further references: # Mon Pol nr 13, poz 162 (1995) # Druk nr 2180 (2003) Rule Poland 1946 only - Apr 14 0:00s 1:00 S Rule Poland 1946 only - Oct 7 2:00s 0 - Rule Poland 1947 only - May 4 2:00s 1:00 S Rule Poland 1947 1949 - Oct Sun>=1 2:00s 0 - Rule Poland 1948 only - Apr 18 2:00s 1:00 S Rule Poland 1949 only - Apr 10 2:00s 1:00 S Rule Poland 1957 only - Jun 2 1:00s 1:00 S Rule Poland 1957 1958 - Sep lastSun 1:00s 0 - Rule Poland 1958 only - Mar 30 1:00s 1:00 S Rule Poland 1959 only - May 31 1:00s 1:00 S Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 - Rule Poland 1960 only - Apr 3 1:00s 1:00 S Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S Rule Poland 1962 1964 - Sep lastSun 1:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Warsaw 1:24:00 - LMT 1880 1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time 1:00 C-Eur CE%sT 1918 Sep 16 3:00 2:00 Poland EE%sT 1922 Jun 1:00 Poland CE%sT 1940 Jun 23 2:00 1:00 C-Eur CE%sT 1944 Oct 1:00 Poland CE%sT 1977 1:00 W-Eur CE%sT 1988 1:00 EU CE%sT # Portugal # # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne: # According to a Portuguese decree (1911-05-26) # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00. # Round the old offset to -0:36:45. This agrees with Willett but disagrees # with Shanks, who says the transition occurred on 1911-05-24 at 00:00 for # Europe/Lisbon, Atlantic/Azores, and Atlantic/Madeira. # # From Rui Pedro Salgueiro (1992-11-12): # Portugal has recently (September, 27) changed timezone # (from WET to MET or CET) to harmonize with EEC. # # Martin Bruckmann (1996-02-29) reports via Peter Ilieve # that Portugal is reverting to 0:00 by not moving its clocks this spring. # The new Prime Minister was fed up with getting up in the dark in the winter. # # From Paul Eggert (1996-11-12): # IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions # at 02:00u, not 01:00u. Assume that these are typos. # IATA SSIM (1991/1992) reports that the Azores were at -1:00. # IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00. # Guess that the Azores changed to EU rules in 1992 (since that's when Portugal # harmonized with the EU), and that they stayed +0:00 that winter. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # DSH writes that despite Decree 1,469 (1915), the change to the clocks was not # done every year, depending on what Spain did, because of railroad schedules. # Go with Shanks & Pottenger. Rule Port 1916 only - Jun 17 23:00 1:00 S # Whitman gives 1916 Oct 31; go with Shanks & Pottenger. Rule Port 1916 only - Nov 1 1:00 0 - Rule Port 1917 only - Feb 28 23:00s 1:00 S Rule Port 1917 1921 - Oct 14 23:00s 0 - Rule Port 1918 only - Mar 1 23:00s 1:00 S Rule Port 1919 only - Feb 28 23:00s 1:00 S Rule Port 1920 only - Feb 29 23:00s 1:00 S Rule Port 1921 only - Feb 28 23:00s 1:00 S Rule Port 1924 only - Apr 16 23:00s 1:00 S Rule Port 1924 only - Oct 14 23:00s 0 - Rule Port 1926 only - Apr 17 23:00s 1:00 S Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 - Rule Port 1927 only - Apr 9 23:00s 1:00 S Rule Port 1928 only - Apr 14 23:00s 1:00 S Rule Port 1929 only - Apr 20 23:00s 1:00 S Rule Port 1931 only - Apr 18 23:00s 1:00 S # Whitman gives 1931 Oct 8; go with Shanks & Pottenger. Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 - Rule Port 1932 only - Apr 2 23:00s 1:00 S Rule Port 1934 only - Apr 7 23:00s 1:00 S # Whitman gives 1934 Oct 5; go with Shanks & Pottenger. Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 - # Shanks & Pottenger give 1935 Apr 30; go with Whitman. Rule Port 1935 only - Mar 30 23:00s 1:00 S Rule Port 1936 only - Apr 18 23:00s 1:00 S # Whitman gives 1937 Apr 2; go with Shanks & Pottenger. Rule Port 1937 only - Apr 3 23:00s 1:00 S Rule Port 1938 only - Mar 26 23:00s 1:00 S Rule Port 1939 only - Apr 15 23:00s 1:00 S # Whitman gives 1939 Oct 7; go with Shanks & Pottenger. Rule Port 1939 only - Nov 18 23:00s 0 - Rule Port 1940 only - Feb 24 23:00s 1:00 S # Shanks & Pottenger give 1940 Oct 7; go with Whitman. Rule Port 1940 1941 - Oct 5 23:00s 0 - Rule Port 1941 only - Apr 5 23:00s 1:00 S Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S Rule Port 1942 only - Apr 25 22:00s 2:00 M # Midsummer Rule Port 1942 only - Aug 15 22:00s 1:00 S Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 - Rule Port 1943 only - Apr 17 22:00s 2:00 M Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 S Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 M Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S Rule Port 1946 only - Oct Sat>=1 23:00s 0 - Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 - # Shanks & Pottenger say DST was observed in 1950; go with Whitman. # Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger. Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 - Rule Port 1977 only - Mar 27 0:00s 1:00 S Rule Port 1977 only - Sep 25 0:00s 0 - Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S Rule Port 1978 only - Oct 1 0:00s 0 - Rule Port 1979 1982 - Sep lastSun 1:00s 0 - Rule Port 1980 only - Mar lastSun 0:00s 1:00 S Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S Rule Port 1983 only - Mar lastSun 2:00s 1:00 S # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Lisbon -0:36:45 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 # Lisbon Mean Time 0:00 Port WE%sT 1966 Apr 3 2:00 1:00 - CET 1976 Sep 26 1:00 0:00 Port WE%sT 1983 Sep 25 1:00s 0:00 W-Eur WE%sT 1992 Sep 27 1:00s 1:00 EU CE%sT 1996 Mar 31 1:00u 0:00 EU WE%sT Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -1:54:32 - HMT 1912 Jan 1 # Horta Mean Time -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time -1:00 Port AZO%sT 1983 Sep 25 1:00s -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s 0:00 EU WE%sT 1993 Mar 28 1:00u -1:00 EU AZO%sT Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time 0:00 Port WE%sT 1983 Sep 25 1:00s 0:00 EU WE%sT # Romania # # From Paul Eggert (1999-10-07): # Nine O'clock # (1998-10-23) reports that the switch occurred at # 04:00 local time in fall 1998. For lack of better info, # assume that Romania and Moldova switched to EU rules in 1997, # the same year as Bulgaria. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Romania 1932 only - May 21 0:00s 1:00 S Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 - Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 S Rule Romania 1979 only - May 27 0:00 1:00 S Rule Romania 1979 only - Sep lastSun 0:00 0 - Rule Romania 1980 only - Apr 5 23:00 1:00 S Rule Romania 1980 only - Sep lastSun 1:00 0 - Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S Rule Romania 1991 1993 - Sep lastSun 0:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct 1:44:24 - BMT 1931 Jul 24 # Bucharest MT 2:00 Romania EE%sT 1981 Mar 29 2:00s 2:00 C-Eur EE%sT 1991 2:00 Romania EE%sT 1994 2:00 E-Eur EE%sT 1997 2:00 EU EE%sT # Russia # From Alexander Krivenyshev (2011-09-15): # Based on last Russian Government Decree # 725 on August 31, 2011 # (Government document # http://www.government.ru/gov/results/16355/print/ # in Russian) # there are few corrections have to be made for some Russian time zones... # All updated Russian Time Zones were placed in table and translated to English # by WorldTimeZone.com at the link below: # http://www.worldtimezone.com/dst_news/dst_news_russia36.htm # From Sanjeev Gupta (2011-09-27): # Scans of [Decree #23 of January 8, 1992] are available at: # http://government.consultant.ru/page.aspx?1223966 # They are in Cyrillic letters (presumably Russian). # From Arthur David Olson (2012-05-09): # Regarding the instant when clocks in time-zone-shifting parts of Russia # changed in September 2011: # # One source is # http://government.ru/gov/results/16355/ # which, according to translate.google.com, begins "Decree of August 31, # 2011 No 725" and contains no other dates or "effective date" information. # # Another source is # http://www.rg.ru/2011/09/06/chas-zona-dok.html # which, according to translate.google.com, begins "Resolution of the # Government of the Russian Federation on August 31, 2011 N 725" and also # contains "Date first official publication: September 6, 2011 Posted on: # in the 'RG' - Federal Issue number 5573 September 6, 2011" but which # does not contain any "effective date" information. # # Another source is # http://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7 # which, in note 8, contains "Resolution #725 of August 31, 2011... # Effective as of after 7 days following the day of the official publication" # but which does not contain any reference to September 6, 2011. # # The Wikipedia article refers to # http://base.consultant.ru/cons/cgi/online.cgi?req=doc;base=LAW;n=118896 # which seems to copy the text of the government.ru page. # # Tobias Conradi combines Wikipedia's # "as of after 7 days following the day of the official publication" # with www.rg.ru's "Date of first official publication: September 6, 2011" to # get September 13, 2011 as the cutover date (unusually, a Tuesday, as Tobias # Conradi notes). # # None of the sources indicates a time of day for changing clocks. # # Go with 2011-09-13 0:00s. # From Alexander Krivenyshev (2014-07-01): # According to the Russian news (ITAR-TASS News Agency) # http://en.itar-tass.com/russia/738562 # the State Duma has approved ... the draft bill on returning to # winter time standard and return Russia 11 time zones. The new # regulations will come into effect on October 26, 2014 at 02:00 ... # http://asozd2.duma.gov.ru/main.nsf/%28Spravka%29?OpenAgent&RN=431985-6&02 # Here is a link where we put together table (based on approved Bill N # 431985-6) with proposed 11 Russian time zones and corresponding # areas/cities/administrative centers in the Russian Federation (in English): # http://www.worldtimezone.com/dst_news/dst_news_russia65.html # # From Alexander Krivenyshev (2014-07-22): # Putin signed the Federal Law 431985-6 ... (in Russian) # http://itar-tass.com/obschestvo/1333711 # http://www.pravo.gov.ru:8080/page.aspx?111660 # http://www.kremlin.ru/acts/46279 # From October 26, 2014 the new Russian time zone map will looks like this: # http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html # From Paul Eggert (2006-03-22): # Except for Moscow after 1919-07-01, I invented the time zone abbreviations. # Moscow time zone abbreviations after 1919-07-01, and Moscow rules after 1991, # are from Andrey A. Chernov. The rest is from Shanks & Pottenger, # except we follow Chernov's report that 1992 DST transitions were Sat # 23:00, not Sun 02:00s. # # From Stanislaw A. Kuzikowski (1994-06-29): # But now it is some months since Novosibirsk is 3 hours ahead of Moscow! # I do not know why they have decided to make this change; # as far as I remember it was done exactly during winter->summer switching # so we (Novosibirsk) simply did not switch. # # From Andrey A. Chernov (1996-10-04): # 'MSK' and 'MSD' were born and used initially on Moscow computers with # UNIX-like OSes by several developer groups (e.g. Demos group, Kiae group).... # The next step was the UUCP network, the Relcom predecessor # (used mainly for mail), and MSK/MSD was actively used there. # # From Chris Carrier (1996-10-30): # According to a friend of mine who rode the Trans-Siberian Railroad from # Moscow to Irkutsk in 1995, public air and rail transport in Russia ... # still follows Moscow time, no matter where in Russia it is located. # # For Grozny, Chechnya, we have the following story from # John Daniszewski, "Scavengers in the Rubble", Los Angeles Times (2001-02-07): # News - often false - is spread by word of mouth. A rumor that it was # time to move the clocks back put this whole city out of sync with # the rest of Russia for two weeks - even soldiers stationed here began # enforcing curfew at the wrong time. # # From Gwillim Law (2001-06-05): # There's considerable evidence that Sakhalin Island used to be in # UTC+11, and has changed to UTC+10, in this decade. I start with the # SSIM, which listed Yuzhno-Sakhalinsk in zone RU10 along with Magadan # until February 1997, and then in RU9 with Khabarovsk and Vladivostok # since September 1997.... Although the Kuril Islands are # administratively part of Sakhalin oblast', they appear to have # remained on UTC+11 along with Magadan. # From Tim Parenti (2014-07-06): # The comments detailing the coverage of each Russian zone are meant to assist # with maintenance only and represent our best guesses as to which regions # are covered by each zone. They are not meant to be taken as an authoritative # listing. The region codes listed come from # http://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498 # and are used for convenience only; no guarantees are made regarding their # future stability. ISO 3166-2:RU codes are also listed for first-level # divisions where available. # Zone NAME GMTOFF RULES FORMAT [UNTIL] # From Tim Parenti (2014-07-03): # Europe/Kaliningrad covers... # 39 RU-KGD Kaliningrad Oblast Zone Europe/Kaliningrad 1:22:00 - LMT 1893 Apr 1:00 C-Eur CE%sT 1945 2:00 Poland CE%sT 1946 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 Russia EE%sT 2011 Mar 27 2:00s 3:00 - FET 2014 Oct 26 2:00s 2:00 - EET # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Europe/Moscow covers... # 01 RU-AD Adygea, Republic of # 05 RU-DA Dagestan, Republic of # 06 RU-IN Ingushetia, Republic of # 07 RU-KB Kabardino-Balkar Republic # 08 RU-KL Kalmykia, Republic of # 09 RU-KC Karachay-Cherkess Republic # 10 RU-KR Karelia, Republic of # 11 RU-KO Komi Republic # 12 RU-ME Mari El Republic # 13 RU-MO Mordovia, Republic of # 15 RU-SE North Ossetia-Alania, Republic of # 16 RU-TA Tatarstan, Republic of # 20 RU-CE Chechen Republic # 21 RU-CU Chuvash Republic # 23 RU-KDA Krasnodar Krai # 26 RU-STA Stavropol Krai # 29 RU-ARK Arkhangelsk Oblast # 31 RU-BEL Belgorod Oblast # 32 RU-BRY Bryansk Oblast # 33 RU-VLA Vladimir Oblast # 35 RU-VLG Vologda Oblast # 36 RU-VOR Voronezh Oblast # 37 RU-IVA Ivanovo Oblast # 40 RU-KLU Kaluga Oblast # 44 RU-KOS Kostroma Oblast # 46 RU-KRS Kursk Oblast # 47 RU-LEN Leningrad Oblast # 48 RU-LIP Lipetsk Oblast # 50 RU-MOS Moscow Oblast # 51 RU-MUR Murmansk Oblast # 52 RU-NIZ Nizhny Novgorod Oblast # 53 RU-NGR Novgorod Oblast # 57 RU-ORL Oryol Oblast # 58 RU-PNZ Penza Oblast # 60 RU-PSK Pskov Oblast # 61 RU-ROS Rostov Oblast # 62 RU-RYA Ryazan Oblast # 67 RU-SMO Smolensk Oblast # 68 RU-TAM Tambov Oblast # 69 RU-TVE Tver Oblast # 71 RU-TUL Tula Oblast # 73 RU-ULY Ulyanovsk Oblast # 76 RU-YAR Yaroslavl Oblast # 77 RU-MOW Moscow # 78 RU-SPE Saint Petersburg # 83 RU-NEN Nenets Autonomous Okrug # From Vladimir Karpinsky (2014-07-08): # LMT in Moscow (before Jul 3, 1916) is 2:30:17, that was defined by Moscow # Observatory (coordinates: 55 deg. 45'29.70", 37 deg. 34'05.30").... # LMT in Moscow since Jul 3, 1916 is 2:31:01 as a result of new standard. # (The info is from the book by Byalokoz ... p. 18.) # The time in St. Petersburg as capital of Russia was defined by # Pulkov observatory, near St. Petersburg. In 1916 LMT Moscow # was synchronized with LMT St. Petersburg (+30 minutes), (Pulkov observatory # coordinates: 59 deg. 46'18.70", 30 deg. 19'40.70") so 30 deg. 19'40.70" > # 2h01m18.7s = 2:01:19. LMT Moscow = LMT St.Petersburg + 30m 2:01:19 + 0:30 = # 2:31:19 ... # # From Paul Eggert (2014-07-08): # Milne does not list Moscow, but suggests that its time might be listed in # Résumés mensuels et annuels des observations météorologiques (1895). # Presumably this is OCLC 85825704, a journal published with parallel text in # Russian and French. This source has not been located; go with Karpinsky. Zone Europe/Moscow 2:30:17 - LMT 1880 2:30:17 - MMT 1916 Jul 3 # Moscow Mean Time 2:31:19 Russia %s 1919 Jul 1 2:00 3:00 Russia %s 1921 Oct 3:00 Russia MSK/MSD 1922 Oct 2:00 - EET 1930 Jun 21 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 Russia EE%sT 1992 Jan 19 2:00s 3:00 Russia MSK/MSD 2011 Mar 27 2:00s 4:00 - MSK 2014 Oct 26 2:00s 3:00 - MSK # From Tim Parenti (2014-07-03): # Europe/Simferopol covers... # ** **** Crimea, Republic of # ** **** Sevastopol Zone Europe/Simferopol 2:16:24 - LMT 1880 2:16 - SMT 1924 May 2 # Simferopol Mean T 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Nov 1:00 C-Eur CE%sT 1944 Apr 13 3:00 Russia MSK/MSD 1990 3:00 - MSK 1990 Jul 1 2:00 2:00 - EET 1992 # Central Crimea used Moscow time 1994/1997. # # From Paul Eggert (2006-03-22): # The _Economist_ (1994-05-28, p 45) reports that central Crimea switched # from Kiev to Moscow time sometime after the January 1994 elections. # Shanks (1999) says "date of change uncertain", but implies that it happened # sometime between the 1994 DST switches. Shanks & Pottenger simply say # 1994-09-25 03:00, but that can't be right. For now, guess it # changed in May. 2:00 E-Eur EE%sT 1994 May # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev. 3:00 E-Eur MSK/MSD 1996 Mar 31 3:00s 3:00 1:00 MSD 1996 Oct 27 3:00s # IATA SSIM (1997-09) says Crimea switched to EET/EEST. # Assume it happened in March by not changing the clocks. 3:00 Russia MSK/MSD 1997 3:00 - MSK 1997 Mar lastSun 1:00u # From Alexander Krivenyshev (2014-03-17): # time change at 2:00 (2am) on March 30, 2014 # http://vz.ru/news/2014/3/17/677464.html # From Paul Eggert (2014-03-30): # Simferopol and Sevastopol reportedly changed their central town clocks # late the previous day, but this appears to have been ceremonial # and the discrepancies are small enough to not worry about. 2:00 EU EE%sT 2014 Mar 30 2:00 4:00 - MSK 2014 Oct 26 2:00s 3:00 - MSK # From Tim Parenti (2014-07-03): # Europe/Volgograd covers... # 30 RU-AST Astrakhan Oblast # 34 RU-VGG Volgograd Oblast # 43 RU-KIR Kirov Oblast # 64 RU-SAR Saratov Oblast # From Paul Eggert (2006-05-09): # Shanks & Pottenger say Kirov is still at +0400 but Wikipedia says +0300. # Perhaps it switched after the others? But we have no data. Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3 3:00 - TSAT 1925 Apr 6 # Tsaritsyn Time 3:00 - STAT 1930 Jun 21 # Stalingrad Time 4:00 - STAT 1961 Nov 11 4:00 Russia VOL%sT 1989 Mar 26 2:00s # Volgograd T 3:00 Russia VOL%sT 1991 Mar 31 2:00s 4:00 - VOLT 1992 Mar 29 2:00s 3:00 Russia MSK/MSD 2011 Mar 27 2:00s 4:00 - MSK 2014 Oct 26 2:00s 3:00 - MSK # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Europe/Samara covers... # 18 RU-UD Udmurt Republic # 63 RU-SAM Samara Oblast # Byalokoz 1919 says Samara was 3:20:20. Zone Europe/Samara 3:20:20 - LMT 1919 Jul 1 2:00 3:00 - SAMT 1930 Jun 21 4:00 - SAMT 1935 Jan 27 4:00 Russia KUY%sT 1989 Mar 26 2:00s # Kuybyshev 3:00 Russia MSK/MSD 1991 Mar 31 2:00s 2:00 Russia EE%sT 1991 Sep 29 2:00s 3:00 - KUYT 1991 Oct 20 3:00 4:00 Russia SAM%sT 2010 Mar 28 2:00s # Samara Time 3:00 Russia SAM%sT 2011 Mar 27 2:00s 4:00 - SAMT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Asia/Yekaterinburg covers... # 02 RU-BA Bashkortostan, Republic of # 90 RU-PER Perm Krai # 45 RU-KGN Kurgan Oblast # 56 RU-ORE Orenburg Oblast # 66 RU-SVE Sverdlovsk Oblast # 72 RU-TYU Tyumen Oblast # 74 RU-CHE Chelyabinsk Oblast # 86 RU-KHM Khanty-Mansi Autonomous Okrug - Yugra # 89 RU-YAN Yamalo-Nenets Autonomous Okrug # # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak # Autonomous Okrug merged to form (90, RU-PER) Perm Krai. # Milne says Yekaterinburg was 4:02:32.9; round to nearest. # Byalokoz 1919 says its provincial time was based on Perm, at 3:45:05. # Assume it switched on 1916-07-03, the time of the new standard. # The 1919 and 1930 transitions are from Shanks. Zone Asia/Yekaterinburg 4:02:33 - LMT 1916 Jul 3 3:45:05 - PMT 1919 Jul 15 4:00 4:00 - SVET 1930 Jun 21 # Sverdlovsk Time 5:00 Russia SVE%sT 1991 Mar 31 2:00s 4:00 Russia SVE%sT 1992 Jan 19 2:00s 5:00 Russia YEK%sT 2011 Mar 27 2:00s 6:00 - YEKT 2014 Oct 26 2:00s 5:00 - YEKT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Asia/Omsk covers... # 04 RU-AL Altai Republic # 22 RU-ALT Altai Krai # 55 RU-OMS Omsk Oblast # Byalokoz 1919 says Omsk was 4:53:30. Zone Asia/Omsk 4:53:30 - LMT 1919 Nov 14 5:00 - OMST 1930 Jun 21 # Omsk Time 6:00 Russia OMS%sT 1991 Mar 31 2:00s 5:00 Russia OMS%sT 1992 Jan 19 2:00s 6:00 Russia OMS%sT 2011 Mar 27 2:00s 7:00 - OMST 2014 Oct 26 2:00s 6:00 - OMST # From Tim Parenti (2014-07-03): # Asia/Novosibirsk covers... # 54 RU-NVS Novosibirsk Oblast # 70 RU-TOM Tomsk Oblast # From Paul Eggert (2006-08-19): I'm guessing about Tomsk here; it's # not clear when it switched from +7 to +6. Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time 7:00 Russia NOV%sT 1991 Mar 31 2:00s 6:00 Russia NOV%sT 1992 Jan 19 2:00s 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P. 6:00 Russia NOV%sT 2011 Mar 27 2:00s 7:00 - NOVT 2014 Oct 26 2:00s 6:00 - NOVT # From Tim Parenti (2014-07-03): # Asia/Novokuznetsk covers... # 42 RU-KEM Kemerovo Oblast # From Alexander Krivenyshev (2009-10-13): # Kemerovo oblast' (Kemerovo region) in Russia will change current time zone on # March 28, 2010: # from current Russia Zone 6 - Krasnoyarsk Time Zone (KRA) UTC +0700 # to Russia Zone 5 - Novosibirsk Time Zone (NOV) UTC +0600 # # This is according to Government of Russia decree # 740, on September # 14, 2009 "Application in the territory of the Kemerovo region the Fifth # time zone." ("Russia Zone 5" or old "USSR Zone 5" is GMT +0600) # # Russian Government web site (Russian language) # http://www.government.ru/content/governmentactivity/rfgovernmentdecisions/archive/2009/09/14/991633.htm # or Russian-English translation by WorldTimeZone.com with reference # map to local region and new Russia Time Zone map after March 28, 2010 # http://www.worldtimezone.com/dst_news/dst_news_russia03.html # # Thus, when Russia will switch to DST on the night of March 28, 2010 # Kemerovo region (Kemerovo oblast') will not change the clock. # # As a result, Kemerovo oblast' will be in the same time zone as # Novosibirsk, Omsk, Tomsk, Barnaul and Altai Republic. # From Tim Parenti (2014-07-02), per Alexander Krivenyshev (2014-07-02): # The Kemerovo region will remain at UTC+7 through the 2014-10-26 change, thus # realigning itself with KRAT. Zone Asia/Novokuznetsk 5:48:48 - LMT 1924 May 1 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time 7:00 Russia KRA%sT 1991 Mar 31 2:00s 6:00 Russia KRA%sT 1992 Jan 19 2:00s 7:00 Russia KRA%sT 2010 Mar 28 2:00s 6:00 Russia NOV%sT 2011 Mar 27 2:00s # Novosibirsk 7:00 - NOVT 2014 Oct 26 2:00s 7:00 - KRAT # Krasnoyarsk Time # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Asia/Krasnoyarsk covers... # 17 RU-TY Tuva Republic # 19 RU-KK Khakassia, Republic of # 24 RU-KYA Krasnoyarsk Krai # # Note: Effective 2007-01-01, (88) Evenk Autonomous Okrug and (84) Taymyr # Autonomous Okrug were merged into (24, RU-KYA) Krasnoyarsk Krai. # Byalokoz 1919 says Krasnoyarsk was 6:11:26. Zone Asia/Krasnoyarsk 6:11:26 - LMT 1920 Jan 6 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time 7:00 Russia KRA%sT 1991 Mar 31 2:00s 6:00 Russia KRA%sT 1992 Jan 19 2:00s 7:00 Russia KRA%sT 2011 Mar 27 2:00s 8:00 - KRAT 2014 Oct 26 2:00s 7:00 - KRAT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Asia/Irkutsk covers... # 03 RU-BU Buryatia, Republic of # 38 RU-IRK Irkutsk Oblast # # Note: Effective 2008-01-01, (85) Ust-Orda Buryat Autonomous Okrug was # merged into (38, RU-IRK) Irkutsk Oblast. # Milne 1899 says Irkutsk was 6:57:15. # Byalokoz 1919 says Irkutsk was 6:57:05. # Go with Byalokoz. Zone Asia/Irkutsk 6:57:05 - LMT 1880 6:57:05 - IMT 1920 Jan 25 # Irkutsk Mean Time 7:00 - IRKT 1930 Jun 21 # Irkutsk Time 8:00 Russia IRK%sT 1991 Mar 31 2:00s 7:00 Russia IRK%sT 1992 Jan 19 2:00s 8:00 Russia IRK%sT 2011 Mar 27 2:00s 9:00 - IRKT 2014 Oct 26 2:00s 8:00 - IRKT # From Tim Parenti (2014-07-06): # Asia/Chita covers... # 92 RU-ZAB Zabaykalsky Krai # # Note: Effective 2008-03-01, (75) Chita Oblast and (80) Agin-Buryat # Autonomous Okrug merged to form (92, RU-ZAB) Zabaykalsky Krai. Zone Asia/Chita 7:33:52 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAK%sT 1991 Mar 31 2:00s 8:00 Russia YAK%sT 1992 Jan 19 2:00s 9:00 Russia YAK%sT 2011 Mar 27 2:00s 10:00 - YAKT 2014 Oct 26 2:00s 8:00 - IRKT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29): # Asia/Yakutsk covers... # 28 RU-AMU Amur Oblast # # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-02 **** Aldansky District # 14-04 **** Amginsky District # 14-05 **** Anabarsky District # 14-06 **** Bulunsky District # 14-07 **** Verkhnevilyuysky District # 14-10 **** Vilyuysky District # 14-11 **** Gorny District # 14-12 **** Zhigansky District # 14-13 **** Kobyaysky District # 14-14 **** Lensky District # 14-15 **** Megino-Kangalassky District # 14-16 **** Mirninsky District # 14-18 **** Namsky District # 14-19 **** Neryungrinsky District # 14-21 **** Nyurbinsky District # 14-23 **** Olenyoksky District # 14-24 **** Olyokminsky District # 14-26 **** Suntarsky District # 14-27 **** Tattinsky District # 14-29 **** Ust-Aldansky District # 14-32 **** Khangalassky District # 14-33 **** Churapchinsky District # 14-34 **** Eveno-Bytantaysky National District # From Tim Parenti (2014-07-03): # Our commentary seems to have lost mention of (14-19) Neryungrinsky District. # Since the surrounding districts of Sakha are all YAKT, assume this is, too. # Also assume its history has been the same as the rest of Asia/Yakutsk. # Byalokoz 1919 says Yakutsk was 8:38:58. Zone Asia/Yakutsk 8:38:58 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAK%sT 1991 Mar 31 2:00s 8:00 Russia YAK%sT 1992 Jan 19 2:00s 9:00 Russia YAK%sT 2011 Mar 27 2:00s 10:00 - YAKT 2014 Oct 26 2:00s 9:00 - YAKT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29): # Asia/Vladivostok covers... # 25 RU-PRI Primorsky Krai # 27 RU-KHA Khabarovsk Krai # 79 RU-YEV Jewish Autonomous Oblast # # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-09 **** Verkhoyansky District # 14-31 **** Ust-Yansky District # Milne 1899 says Vladivostok was 8:47:33.5. # Byalokoz 1919 says Vladivostok was 8:47:31. # Go with Byalokoz. Zone Asia/Vladivostok 8:47:31 - LMT 1922 Nov 15 9:00 - VLAT 1930 Jun 21 # Vladivostok Time 10:00 Russia VLA%sT 1991 Mar 31 2:00s 9:00 Russia VLA%sT 1992 Jan 19 2:00s 10:00 Russia VLA%sT 2011 Mar 27 2:00s 11:00 - VLAT 2014 Oct 26 2:00s 10:00 - VLAT # From Tim Parenti (2014-07-03): # Asia/Khandyga covers parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-28 **** Tomponsky District # 14-30 **** Ust-Maysky District # From Arthur David Olson (2012-05-09): # Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time # in 2011. # From Paul Eggert (2012-11-25): # Shanks and Pottenger (2003) has Khandyga on Yakutsk time. # Make a wild guess that it switched to Vladivostok time in 2004. # This transition is no doubt wrong, but we have no better info. Zone Asia/Khandyga 9:02:13 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAK%sT 1991 Mar 31 2:00s 8:00 Russia YAK%sT 1992 Jan 19 2:00s 9:00 Russia YAK%sT 2004 10:00 Russia VLA%sT 2011 Mar 27 2:00s 11:00 - VLAT 2011 Sep 13 0:00s # Decree 725? 10:00 - YAKT 2014 Oct 26 2:00s 9:00 - YAKT # From Tim Parenti (2014-07-03): # Asia/Sakhalin covers... # 65 RU-SAK Sakhalin Oblast # ...with the exception of: # 65-11 **** Severo-Kurilsky District (North Kuril Islands) # The Zone name should be Asia/Yuzhno-Sakhalinsk, but that's too long. Zone Asia/Sakhalin 9:30:48 - LMT 1905 Aug 23 9:00 - JCST 1937 Oct 1 9:00 - JST 1945 Aug 25 11:00 Russia SAK%sT 1991 Mar 31 2:00s # Sakhalin T 10:00 Russia SAK%sT 1992 Jan 19 2:00s 11:00 Russia SAK%sT 1997 Mar lastSun 2:00s 10:00 Russia SAK%sT 2011 Mar 27 2:00s 11:00 - SAKT 2014 Oct 26 2:00s 10:00 - SAKT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29): # Asia/Magadan covers... # 49 RU-MAG Magadan Oblast # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02): # Magadan Oblast is moving from UTC+12 to UTC+10 on 2014-10-26; however, # several districts of Sakha Republic as well as Severo-Kurilsky District of # the Sakhalin Oblast (also known as the North Kuril Islands), represented # until now by Asia/Magadan, will instead move to UTC+11. These regions will # need their own zone. Zone Asia/Magadan 10:03:12 - LMT 1924 May 2 10:00 - MAGT 1930 Jun 21 # Magadan Time 11:00 Russia MAG%sT 1991 Mar 31 2:00s 10:00 Russia MAG%sT 1992 Jan 19 2:00s 11:00 Russia MAG%sT 2011 Mar 27 2:00s 12:00 - MAGT 2014 Oct 26 2:00s 10:00 - MAGT # From Tim Parenti (2014-07-06): # Asia/Srednekolymsk covers parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-01 **** Abyysky District # 14-03 **** Allaikhovsky District # 14-08 **** Verkhnekolymsky District # 14-17 **** Momsky District # 14-20 **** Nizhnekolymsky District # 14-25 **** Srednekolymsky District # # ...and parts of (65, RU-SAK) Sakhalin Oblast: # 65-11 **** Severo-Kurilsky District (North Kuril Islands) # From Tim Parenti (2014-07-02): # Oymyakonsky District of Sakha Republic (represented by Ust-Nera), along with # most of Sakhalin Oblast (represented by Sakhalin) will be moving to UTC+10 on # 2014-10-26 to stay aligned with VLAT/SAKT; however, Severo-Kurilsky District # of the Sakhalin Oblast (also known as the North Kuril Islands, represented by # Severo-Kurilsk) will remain on UTC+11. # From Tim Parenti (2014-07-06): # Assume North Kuril Islands have history like Magadan before 2011-03-27. # There is a decent chance this is wrong, in which case a new zone # Asia/Severo-Kurilsk would become necessary. # # Srednekolymsk and Zyryanka are the most populous places amongst these # districts, but have very similar populations. In fact, Wikipedia currently # lists them both as having 3528 people, exactly 1668 males and 1860 females # each! (Yikes!) # http://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276 # http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493 # Assume this is a mistake, albeit an amusing one. # # Looking at censuses, the populations of the two municipalities seem to have # fluctuated recently. Zyryanka was more populous than Srednekolymsk in the # 1989 and 2002 censuses, but Srednekolymsk was more populous in the most # recent (2010) census, 3525 to 3170. (See pages 195 and 197 of # http://www.gks.ru/free_doc/new_site/perepis2010/croc/Documents/Vol1/pub-01-05.pdf # in Russian.) In addition, Srednekolymsk appears to be a much older # settlement and the population of Zyryanka seems to be declining. # Go with Srednekolymsk. # # Since Magadan Oblast moves to UTC+10 on 2014-10-26, we cannot keep using MAGT # as the abbreviation. Use SRET instead. Zone Asia/Srednekolymsk 10:14:52 - LMT 1924 May 2 10:00 - MAGT 1930 Jun 21 # Magadan Time 11:00 Russia MAG%sT 1991 Mar 31 2:00s 10:00 Russia MAG%sT 1992 Jan 19 2:00s 11:00 Russia MAG%sT 2011 Mar 27 2:00s 12:00 - MAGT 2014 Oct 26 2:00s 11:00 - SRET # Srednekolymsk Time # From Tim Parenti (2014-07-03): # Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-22 **** Oymyakonsky District # From Arthur David Olson (2012-05-09): # Ojmyakonskij [and the Kuril Islands] switched from # Magadan time to Vladivostok time in 2011. # # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02): # It's unlikely that any of the Kuril Islands were involved in such a switch, # as the South and Middle Kurils have been on UTC+11 (SAKT) with the rest of # Sakhalin Oblast since at least 2011-09, and the North Kurils have been on # UTC+12 since at least then, too. Zone Asia/Ust-Nera 9:32:54 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAKT 1981 Apr 1 11:00 Russia MAG%sT 1991 Mar 31 2:00s 10:00 Russia MAG%sT 1992 Jan 19 2:00s 11:00 Russia MAG%sT 2011 Mar 27 2:00s 12:00 - MAGT 2011 Sep 13 0:00s # Decree 725? 11:00 - VLAT 2014 Oct 26 2:00s 10:00 - VLAT # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25): # Asia/Kamchatka covers... # 91 RU-KAM Kamchatka Krai # # Note: Effective 2007-07-01, (41) Kamchatka Oblast and (82) Koryak # Autonomous Okrug merged to form (91, RU-KAM) Kamchatka Krai. # The Zone name should be Asia/Petropavlovsk-Kamchatski or perhaps # Asia/Petropavlovsk-Kamchatsky, but these are too long. Zone Asia/Kamchatka 10:34:36 - LMT 1922 Nov 10 11:00 - PETT 1930 Jun 21 # P-K Time 12:00 Russia PET%sT 1991 Mar 31 2:00s 11:00 Russia PET%sT 1992 Jan 19 2:00s 12:00 Russia PET%sT 2010 Mar 28 2:00s 11:00 Russia PET%sT 2011 Mar 27 2:00s 12:00 - PETT # From Tim Parenti (2014-07-03): # Asia/Anadyr covers... # 87 RU-CHU Chukotka Autonomous Okrug Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2 12:00 - ANAT 1930 Jun 21 # Anadyr Time 13:00 Russia ANA%sT 1982 Apr 1 0:00s 12:00 Russia ANA%sT 1991 Mar 31 2:00s 11:00 Russia ANA%sT 1992 Jan 19 2:00s 12:00 Russia ANA%sT 2010 Mar 28 2:00s 11:00 Russia ANA%sT 2011 Mar 27 2:00s 12:00 - ANAT # San Marino # See Europe/Rome. # Serbia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Belgrade 1:22:00 - LMT 1884 1:00 - CET 1941 Apr 18 23:00 1:00 C-Eur CE%sT 1945 1:00 - CET 1945 May 8 2:00s 1:00 1:00 CEST 1945 Sep 16 2:00s # Metod Koželj reports that the legal date of # transition to EU rules was 1982-11-27, for all of Yugoslavia at the time. # Shanks & Pottenger don't give as much detail, so go with Koželj. 1:00 - CET 1982 Nov 27 1:00 EU CE%sT Link Europe/Belgrade Europe/Ljubljana # Slovenia Link Europe/Belgrade Europe/Podgorica # Montenegro Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina Link Europe/Belgrade Europe/Skopje # Macedonia Link Europe/Belgrade Europe/Zagreb # Croatia # Slovakia Link Europe/Prague Europe/Bratislava # Slovenia # See Europe/Belgrade. # Spain # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1; # go with Shanks & Pottenger. Rule Spain 1917 only - May 5 23:00s 1:00 S Rule Spain 1917 1919 - Oct 6 23:00s 0 - Rule Spain 1918 only - Apr 15 23:00s 1:00 S Rule Spain 1919 only - Apr 5 23:00s 1:00 S # Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger. Rule Spain 1924 only - Apr 16 23:00s 1:00 S # Whitman gives 1924 Oct 14; go with Shanks & Pottenger. Rule Spain 1924 only - Oct 4 23:00s 0 - Rule Spain 1926 only - Apr 17 23:00s 1:00 S # Whitman says no DST in 1929; go with Shanks & Pottenger. Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 - Rule Spain 1927 only - Apr 9 23:00s 1:00 S Rule Spain 1928 only - Apr 14 23:00s 1:00 S Rule Spain 1929 only - Apr 20 23:00s 1:00 S # Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13; # go with Shanks & Pottenger. Rule Spain 1937 only - May 22 23:00s 1:00 S Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 - Rule Spain 1938 only - Mar 22 23:00s 1:00 S Rule Spain 1939 only - Apr 15 23:00s 1:00 S Rule Spain 1940 only - Mar 16 23:00s 1:00 S # Whitman says no DST 1942-1945; go with Shanks & Pottenger. Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer Rule Spain 1942 only - Sep 1 22:00s 1:00 S Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M Rule Spain 1943 only - Oct 3 22:00s 1:00 S Rule Spain 1944 only - Oct 10 22:00s 1:00 S Rule Spain 1945 only - Sep 30 1:00 1:00 S Rule Spain 1946 only - Sep 30 0:00 0 - Rule Spain 1949 only - Apr 30 23:00 1:00 S Rule Spain 1949 only - Sep 30 1:00 0 - Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 - Rule Spain 1976 only - Mar 27 23:00 1:00 S Rule Spain 1976 1977 - Sep lastSun 1:00 0 - Rule Spain 1977 1978 - Apr 2 23:00 1:00 S Rule Spain 1978 only - Oct 1 1:00 0 - # The following rules are copied from Morocco from 1967 through 1978. Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S Rule SpainAfrica 1967 only - Oct 1 0:00 0 - Rule SpainAfrica 1974 only - Jun 24 0:00 1:00 S Rule SpainAfrica 1974 only - Sep 1 0:00 0 - Rule SpainAfrica 1976 1977 - May 1 0:00 1:00 S Rule SpainAfrica 1976 only - Aug 1 0:00 0 - Rule SpainAfrica 1977 only - Sep 28 0:00 0 - Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S Rule SpainAfrica 1978 only - Aug 4 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s 0:00 Spain WE%sT 1946 Sep 30 1:00 Spain CE%sT 1979 1:00 EU CE%sT Zone Africa/Ceuta -0:21:16 - LMT 1901 0:00 - WET 1918 May 6 23:00 0:00 1:00 WEST 1918 Oct 7 23:00 0:00 - WET 1924 0:00 Spain WE%sT 1929 0:00 SpainAfrica WE%sT 1984 Mar 16 1:00 - CET 1986 1:00 EU CE%sT Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C. -1:00 - CANT 1946 Sep 30 1:00 # Canaries T 0:00 - WET 1980 Apr 6 0:00s 0:00 1:00 WEST 1980 Sep 28 0:00s 0:00 EU WE%sT # IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u. # Ignore this for now, as the Canaries are part of the EU. # Sweden # From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger: # # The law "Svensk författningssamling 1878, no 14" about standard time in 1879: # From the beginning of 1879 (that is 01-01 00:00) the time for all # places in the country is "the mean solar time for the meridian at # three degrees, or twelve minutes of time, to the west of the # meridian of the Observatory of Stockholm". The law is dated 1878-05-31. # # The observatory at that time had the meridian 18 degrees 03' 30" # eastern longitude = 01:12:14 in time. Less 12 minutes gives the # national standard time as 01:00:14 ahead of GMT.... # # About the beginning of CET in Sweden. The lawtext ("Svensk # författningssamling 1899, no 44") states, that "from the beginning # of 1900... ... the same as the mean solar time for the meridian at # the distance of one hour of time from the meridian of the English # observatory at Greenwich, or at 12 minutes 14 seconds to the west # from the meridian of the Observatory of Stockholm". The law is dated # 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time # in Sweden is 01:00:00 ahead of GMT. # # 1916: The lawtext ("Svensk författningssamling 1916, no 124") states # that "1916-05-15 is considered to begin one hour earlier". It is # pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00.... # Further the law says, that "1916-09-30 is considered to end one hour later". # # The laws regulating [DST] are available on the site of the Swedish # Parliament beginning with 1985 - the laws regulating 1980/1984 are # not available on the site (to my knowledge they are only available # in Swedish): (type # "sommartid" without the quotes in the field "Fritext" and then click # the Sök-button). # # (2001-05-13): # # I have now found a newspaper stating that at 1916-10-01 01:00 # summertime the church-clocks etc were set back one hour to show # 1916-10-01 00:00 standard time. The article also reports that some # people thought the switch to standard time would take place already # at 1916-10-01 00:00 summer time, but they had to wait for another # hour before the event took place. # # Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 1:00:14 - SET 1900 Jan 1 # Swedish Time 1:00 - CET 1916 May 14 23:00 1:00 1:00 CEST 1916 Oct 1 1:00 1:00 - CET 1980 1:00 EU CE%sT # Switzerland # From Howse: # By the end of the 18th century clocks and watches became commonplace # and their performance improved enormously. Communities began to keep # mean time in preference to apparent time - Geneva from 1780 .... # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # From Whitman (who writes "Midnight?"): # Rule Swiss 1940 only - Nov 2 0:00 1:00 S # Rule Swiss 1940 only - Dec 31 0:00 0 - # From Shanks & Pottenger: # Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S # Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 - # From Alois Treindl (2008-12-17): # I have researched the DST usage in Switzerland during the 1940ies. # # As I wrote in an earlier message, I suspected the current tzdata values # to be wrong. This is now verified. # # I have found copies of the original ruling by the Swiss Federal # government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss # federal law collection)... # # DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am # DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. # # DST began on Monday, 4 May 1942 at 01:00 am # DST ended on Monday, 5 Oct 1942 at 02:00 am # # There was no DST in 1940, I have checked the law collection carefully. # It is also indicated by the fact that the 1942 entry in the law # collection points back to 1941 as a reference, but no reference to any # other years are made. # # Newspaper articles I have read in the archives on 6 May 1941 reported # about the introduction of DST (Sommerzeit in German) during the previous # night as an absolute novelty, because this was the first time that such # a thing had happened in Switzerland. # # I have also checked 1916, because one book source (Gabriel, Traité de # l'heure dans le monde) claims that Switzerland had DST in 1916. This is # false, no official document could be found. Probably Gabriel got misled # by references to Germany, which introduced DST in 1916 for the first time. # # The tzdata rules for Switzerland must be changed to: # Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S # Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - # # The 1940 rules must be deleted. # # One further detail for Switzerland, which is probably out of scope for # most users of tzdata: The [Europe/Zurich zone] ... # describes all of Switzerland correctly, with the exception of # the Canton de Genève (Geneva, Genf). Between 1848 and 1894 Geneva did not # follow Bern Mean Time but kept its own local mean time. # To represent this, an extra zone would be needed. # # From Alois Treindl (2013-09-11): # The Federal regulations say # http://www.admin.ch/opc/de/classified-compilation/20071096/index.html # ... the meridian for Bern mean time ... is 7 degrees 26' 22.50". # Expressed in time, it is 0h29m45.5s. # From Pierre-Yves Berger (2013-09-11): # the "Circulaire du conseil fédéral" (December 11 1893) # http://www.amtsdruckschriften.bar.admin.ch/viewOrigDoc.do?id=10071353 # clearly states that the [1894-06-01] change should be done at midnight # but if no one is present after 11 at night, could be postponed until one # hour before the beginning of service. # From Paul Eggert (2013-09-11): # Round BMT to the nearest even second, 0:29:46. # # We can find no reliable source for Shanks's assertion that all of Switzerland # except Geneva switched to Bern Mean Time at 00:00 on 1848-09-12. This book: # # Jakob Messerli. Gleichmässig, pünktlich, schnell. Zeiteinteilung und # Zeitgebrauch in der Schweiz im 19. Jahrhundert. Chronos, Zurich 1995, # ISBN 3-905311-68-2, OCLC 717570797. # # suggests that the transition was more gradual, and that the Swiss did not # agree about civil time during the transition. The timekeeping it gives the # most detail for is postal and telegraph time: here, federal legislation (the # "Bundesgesetz über die Erstellung von elektrischen Telegraphen") passed on # 1851-11-23, and an official implementation notice was published 1853-07-16 # (Bundesblatt 1853, Bd. II, S. 859). On p 72 Messerli writes that in # practice since July 1853 Bernese time was used in "all postal and telegraph # offices in Switzerland from Geneva to St. Gallen and Basel to Chiasso" # (Google translation). For now, model this transition as occurring on # 1853-07-16, though it probably occurred at some other date in Zurich, and # legal civil time probably changed at still some other transition date. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment. 0:29:46 - BMT 1894 Jun # Bern Mean Time 1:00 Swiss CE%sT 1981 1:00 EU CE%sT # Turkey # From Amar Devegowda (2007-01-03): # The time zone rules for Istanbul, Turkey have not been changed for years now. # ... The latest rules are available at: # http://www.timeanddate.com/worldclock/timezone.html?n=107 # From Steffen Thorsen (2007-01-03): # I have been able to find press records back to 1996 which all say that # DST started 01:00 local time and end at 02:00 local time. I am not sure # what happened before that. One example for each year from 1996 to 2001: # http://newspot.byegm.gov.tr/arsiv/1996/21/N4.htm # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING97/03/97X03X25.TXT # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING98/03/98X03X02.HTM # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING99/10/99X10X26.HTM#%2016 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2000/03/00X03X06.HTM#%2021 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2001/03/23x03x01.HTM#%2027 # From Paul Eggert (2007-01-03): # Prefer the above source to Shanks & Pottenger for time stamps after 1990. # From Steffen Thorsen (2007-03-09): # Starting 2007 though, it seems that they are adopting EU's 1:00 UTC # start/end time, according to the following page (2007-03-07): # http://www.ntvmsnbc.com/news/402029.asp # The official document is located here - it is in Turkish...: # http://rega.basbakanlik.gov.tr/eskiler/2007/03/20070307-7.htm # I was able to locate the following seemingly official document # (on a non-government server though) describing dates between 2002 and 2006: # http://www.alomaliye.com/bkk_2002_3769.htm # From Gökdeniz Karadağ (2011-03-10): # According to the articles linked below, Turkey will change into summer # time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27. # This change is due to a nationwide exam on 27th. # http://www.worldbulletin.net/?aType=haber&ArticleID=70872 # Turkish: # http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373 # From Faruk Pasin (2014-02-14): # The DST for Turkey has been changed for this year because of the # Turkish Local election.... # http://www.sabah.com.tr/Ekonomi/2014/02/12/yaz-saatinde-onemli-degisiklik # ... so Turkey will move clocks forward one hour on March 31 at 3:00 a.m. # From Randal L. Schwartz (2014-04-15): # Having landed on a flight from the states to Istanbul (via AMS) on March 31, # I can tell you that NOBODY (even the airlines) respected this timezone DST # change delay. Maybe the word just didn't get out in time. # From Paul Eggert (2014-06-15): # The press reported massive confusion, as election officials obeyed the rule # change but cell phones (and airline baggage systems) did not. See: # Kostidis M. Eventful elections in Turkey. Balkan News Agency # http://www.balkaneu.com/eventful-elections-turkey/ 2014-03-30. # I guess the best we can do is document the official time. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Turkey 1916 only - May 1 0:00 1:00 S Rule Turkey 1916 only - Oct 1 0:00 0 - Rule Turkey 1920 only - Mar 28 0:00 1:00 S Rule Turkey 1920 only - Oct 25 0:00 0 - Rule Turkey 1921 only - Apr 3 0:00 1:00 S Rule Turkey 1921 only - Oct 3 0:00 0 - Rule Turkey 1922 only - Mar 26 0:00 1:00 S Rule Turkey 1922 only - Oct 8 0:00 0 - # Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925; # go with Shanks & Pottenger. Rule Turkey 1924 only - May 13 0:00 1:00 S Rule Turkey 1924 1925 - Oct 1 0:00 0 - Rule Turkey 1925 only - May 1 0:00 1:00 S Rule Turkey 1940 only - Jun 30 0:00 1:00 S Rule Turkey 1940 only - Oct 5 0:00 0 - Rule Turkey 1940 only - Dec 1 0:00 1:00 S Rule Turkey 1941 only - Sep 21 0:00 0 - Rule Turkey 1942 only - Apr 1 0:00 1:00 S # Whitman omits the next two transition and gives 1945 Oct 1; # go with Shanks & Pottenger. Rule Turkey 1942 only - Nov 1 0:00 0 - Rule Turkey 1945 only - Apr 2 0:00 1:00 S Rule Turkey 1945 only - Oct 8 0:00 0 - Rule Turkey 1946 only - Jun 1 0:00 1:00 S Rule Turkey 1946 only - Oct 1 0:00 0 - Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 S Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 - Rule Turkey 1949 only - Apr 10 0:00 1:00 S Rule Turkey 1950 only - Apr 19 0:00 1:00 S Rule Turkey 1951 only - Apr 22 0:00 1:00 S Rule Turkey 1951 only - Oct 8 0:00 0 - Rule Turkey 1962 only - Jul 15 0:00 1:00 S Rule Turkey 1962 only - Oct 8 0:00 0 - Rule Turkey 1964 only - May 15 0:00 1:00 S Rule Turkey 1964 only - Oct 1 0:00 0 - Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 S Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 - Rule Turkey 1973 only - Jun 3 1:00 1:00 S Rule Turkey 1973 only - Nov 4 3:00 0 - Rule Turkey 1974 only - Mar 31 2:00 1:00 S Rule Turkey 1974 only - Nov 3 5:00 0 - Rule Turkey 1975 only - Mar 30 0:00 1:00 S Rule Turkey 1975 1976 - Oct lastSun 0:00 0 - Rule Turkey 1976 only - Jun 1 0:00 1:00 S Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 S Rule Turkey 1977 only - Oct 16 0:00 0 - Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 S Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 - Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 S Rule Turkey 1983 only - Jul 31 0:00 1:00 S Rule Turkey 1983 only - Oct 2 0:00 0 - Rule Turkey 1985 only - Apr 20 0:00 1:00 S Rule Turkey 1985 only - Sep 28 0:00 0 - Rule Turkey 1986 1990 - Mar lastSun 2:00s 1:00 S Rule Turkey 1986 1990 - Sep lastSun 2:00s 0 - Rule Turkey 1991 2006 - Mar lastSun 1:00s 1:00 S Rule Turkey 1991 1995 - Sep lastSun 1:00s 0 - Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Istanbul 1:55:52 - LMT 1880 1:56:56 - IMT 1910 Oct # Istanbul Mean Time? 2:00 Turkey EE%sT 1978 Oct 15 3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time 2:00 Turkey EE%sT 2007 2:00 EU EE%sT 2011 Mar 27 1:00u 2:00 - EET 2011 Mar 28 1:00u 2:00 EU EE%sT 2014 Mar 30 1:00u 2:00 - EET 2014 Mar 31 1:00u 2:00 EU EE%sT Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # Ukraine # # From Igor Karpov, who works for the Ukrainian Ministry of Justice, # via Garrett Wollman (2003-01-27): # BTW, I've found the official document on this matter. It's government # regulations number 509, May 13, 1996. In my poor translation it says: # "Time in Ukraine is set to second timezone (Kiev time). Each last Sunday # of March at 3am the time is changing to 4am and each last Sunday of # October the time at 4am is changing to 3am" # From Alexander Krivenyshev (2011-09-20): # On September 20, 2011 the deputies of the Verkhovna Rada agreed to # abolish the transfer clock to winter time. # # Bill number 8330 of MP from the Party of Regions Oleg Nadoshi got # approval from 266 deputies. # # Ukraine abolishes transfer back to the winter time (in Russian) # http://news.mail.ru/politics/6861560/ # # The Ukrainians will no longer change the clock (in Russian) # http://www.segodnya.ua/news/14290482.html # # Deputies cancelled the winter time (in Russian) # http://www.pravda.com.ua/rus/news/2011/09/20/6600616/ # # From Philip Pizzey (2011-10-18): # Today my Ukrainian colleagues have informed me that the # Ukrainian parliament have decided that they will go to winter # time this year after all. # # From Udo Schwedt (2011-10-18): # As far as I understand, the recent change to the Ukrainian time zone # (Europe/Kiev) to introduce permanent daylight saving time (similar # to Russia) was reverted today: # http://portal.rada.gov.ua/rada/control/en/publish/article/info_left?art_id=287324&cat_id=105995 # # Also reported by Alexander Bokovoy (2011-10-18) who also noted: # The law documents themselves are at # http://w1.c1.rada.gov.ua/pls/zweb_n/webproc4_1?id=&pf3511=41484 # From Vladimir in Moscow via Alois Treindl re Kiev time 1991/2 (2014-02-28): # First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST: # 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST # 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST # * Ukrainian Government's Resolution of 18.06.1990, No. 134. # http://search.ligazakon.ua/l_doc2.nsf/link1/T001500.html # # They did not end DST in September, 1990 (according to the law, # "summer time" was still in action): # 09 30 1990 03:00 -02.00 1 Time Zone 2 with DST # * Ukrainian Government's Resolution of 21.09.1990, No. 272. # http://search.ligazakon.ua/l_doc2.nsf/link1/KP900272.html # # Again no change in March, 1991 ("summer time" in action): # 03 31 1991 02:00 -02.00 1 Time Zone 2 with DST # # DST ended in September 1991 ("summer time" ended): # 09 29 1991 03:00 -02.00 0 Time Zone 2, no DST # * Ukrainian Government's Resolution of 25.09.1991, No. 225. # http://www.uazakon.com/documents/date_21/pg_iwgdoc.htm # This is an answer. # # Since 1992 they had normal DST procedure: # 03 29 1992 02:00 -02.00 1 DST started # 09 27 1992 03:00 -02.00 0 DST ended # * Ukrainian Government's Resolution of 20.03.1992, No. 139. # http://www.uazakon.com/documents/date_8u/pg_grcasa.htm # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Most of Ukraine since 1970 has been like Kiev. # "Kyiv" is the transliteration of the Ukrainian name, but # "Kiev" is more common in English. Zone Europe/Kiev 2:02:04 - LMT 1880 2:02:04 - KMT 1924 May 2 # Kiev Mean Time 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Sep 20 1:00 C-Eur CE%sT 1943 Nov 6 3:00 Russia MSK/MSD 1990 Jul 1 2:00 2:00 1:00 EEST 1991 Sep 29 3:00 2:00 E-Eur EE%sT 1995 2:00 EU EE%sT # Ruthenia used CET 1990/1991. # "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but # "Uzhgorod" is more common in English. Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct 1:00 - CET 1940 1:00 C-Eur CE%sT 1944 Oct 1:00 1:00 CEST 1944 Oct 26 1:00 - CET 1945 Jun 29 3:00 Russia MSK/MSD 1990 3:00 - MSK 1990 Jul 1 2:00 1:00 - CET 1991 Mar 31 3:00 2:00 - EET 1992 2:00 E-Eur EE%sT 1995 2:00 EU EE%sT # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991. # "Zaporizhia" is the transliteration of the Ukrainian name, but # "Zaporozh'ye" is more common in English. Use the common English # spelling, except omit the apostrophe as it is not allowed in # portable Posix file names. Zone Europe/Zaporozhye 2:20:40 - LMT 1880 2:20 - CUT 1924 May 2 # Central Ukraine T 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Aug 25 1:00 C-Eur CE%sT 1943 Oct 25 3:00 Russia MSK/MSD 1991 Mar 31 2:00 2:00 E-Eur EE%sT 1995 2:00 EU EE%sT # Vatican City # See Europe/Rome. ############################################################################### # One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from # the last Sunday in March to the last Sunday in September in 1986. # The source shows Romania changing a day later than everybody else. # # According to Bernard Sieloff's source, Poland is in the MET time zone but # uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules. # Bernard Sieloff's source claims Romania switches on the same day, but at # 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey # switches on the same day, but switches on at 01:00 standard time # and off at 00:00 standard time (i.e., 01:00 DST) # ... # Date: Wed, 28 Jan 87 16:56:27 -0100 # From: Tom Hofmann # ... # # ...the European time rules are...standardized since 1981, when # most European countries started DST. Before that year, only # a few countries (UK, France, Italy) had DST, each according # to own national rules. In 1981, however, DST started on # 'Apr firstSun', and not on 'Mar lastSun' as in the following # years... # But also since 1981 there are some more national exceptions # than listed in 'europe': Switzerland, for example, joined DST # one year later, Denmark ended DST on 'Oct 1' instead of 'Sep # lastSun' in 1981 - I don't know how they handle now. # # Finally, DST ist always from 'Apr 1' to 'Oct 1' in the # Soviet Union (as far as I know). # # Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG, # 4002 Basle, Switzerland # ... # ... # Date: Wed, 4 Feb 87 22:35:22 +0100 # From: Dik T. Winter # ... # # The information from Tom Hofmann is (as far as I know) not entirely correct. # After a request from chongo at amdahl I tried to retrieve all information # about DST in Europe. I was able to find all from about 1969. # # ...standardization on DST in Europe started in about 1977 with switches on # first Sunday in April and last Sunday in September... # In 1981 UK joined Europe insofar that # the starting day for both shifted to last Sunday in March. And from 1982 # the whole of Europe used DST, with switch dates April 1 and October 1 in # the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch # dates... # # It should also be remembered that time-zones are not constants; e.g. # Portugal switched in 1976 from MET (or CET) to WET with DST... # Note also that though there were rules for switch dates not # all countries abided to these dates, and many individual deviations # occurred, though not since 1982 I believe. Another note: it is always # assumed that DST is 1 hour ahead of normal time, this need not be the # case; at least in the Netherlands there have been times when DST was 2 hours # in advance of normal time. # # ... # dik t. winter, cwi, amsterdam, nederland # ... # From Bob Devine (1988-01-28): # ... # Greece: Last Sunday in April to last Sunday in September (iffy on dates). # Since 1978. Change at midnight. # ... # Monaco: has same DST as France. # ... Index: stable/6/share/zoneinfo/northamerica =================================================================== --- stable/6/share/zoneinfo/northamerica (revision 283046) +++ stable/6/share/zoneinfo/northamerica (revision 283047) @@ -1,3182 +1,3148 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # also includes Central America and the Caribbean # This file is by no means authoritative; if you think you know better, # go ahead and edit the file (and please send any changes to # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. # From Paul Eggert (1999-03-22): # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). ############################################################################### # United States # From Paul Eggert (1999-03-31): # Howse writes (pp 121-125) that time zones were invented by # Professor Charles Ferdinand Dowd (1825-1904), # Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY). # His pamphlet "A System of National Time for Railroads" (1870) # was the result of his proposals at the Convention of Railroad Trunk Lines # in New York City (1869-10). His 1870 proposal was based on Washington, DC, # but in 1872-05 he moved the proposed origin to Greenwich. # His proposal was adopted by the railroads on 1883-11-18 at 12:00, # and the most of the country soon followed suit. # From Paul Eggert (2005-04-16): # That 1883 transition occurred at 12:00 new time, not at 12:00 old time. # See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005). # From Paul Eggert (2006-03-22): # A good source for time zone historical data in the US is # Thomas G. Shanks, The American Atlas (5th edition), # San Diego: ACS Publications, Inc. (1991). # Make sure you have the errata sheet; the book is somewhat useless without it. # It is the source for most of the pre-1991 US entries below. # From Paul Eggert (2001-03-06): # Daylight Saving Time was first suggested as a joke by Benjamin Franklin # in his whimsical essay "An Economical Project for Diminishing the Cost # of Light" published in the Journal de Paris (1784-04-26). # Not everyone is happy with the results: # # I don't really care how time is reckoned so long as there is some # agreement about it, but I object to being told that I am saving # daylight when my reason tells me that I am doing nothing of the kind. # I even object to the implication that I am wasting something # valuable if I stay in bed after the sun has risen. As an admirer # of moonlight I resent the bossy insistence of those who want to # reduce my time for enjoying it. At the back of the Daylight Saving # scheme I detect the bony, blue-fingered hand of Puritanism, eager # to push people into bed earlier, and get them up earlier, to make # them healthy, wealthy and wise in spite of themselves. # # -- Robertson Davies, The diary of Samuel Marchbanks, # Clarke, Irwin (1947), XIX, Sunday # # For more about the first ten years of DST in the United States, see # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint # (Carnegie Library of Pittsburgh, 1927). # http://www.clpgh.org/exhibit/dst.html # # Shanks says that DST was called "War Time" in the US in 1918 and 1919. # However, DST was imposed by the Standard Time Act of 1918, which # was the first nationwide legal time standard, and apparently # time was just called "Standard Time" or "Daylight Saving Time". # From Arthur David Olson: # US Daylight Saving Time ended on the last Sunday of *October* in 1974. # See, for example, the front page of the Saturday, 1974-10-26 # and Sunday, 1974-10-27 editions of the Washington Post. # From Arthur David Olson: # Before the Uniform Time Act of 1966 took effect in 1967, observance of # Daylight Saving Time in the US was by local option, except during wartime. # From Arthur David Olson (2000-09-25): # Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama. # In the introduction, Oboler spoke of "Eastern Peace Time." # An AltaVista search turned up: # http://rowayton.org/rhs/hstaug45.html # "When the time is announced over the radio now, it is 'Eastern Peace # Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful." # (August 1945) by way of confirmation. # From Joseph Gallant citing # George H. Douglas, _The Early Days of Radio Broadcasting_ (1987): # At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set # to switch to London for Attlee's address, but the American people # never got to hear his speech live. According to one press account, # CBS' Bob Trout was first to announce the word of Japan's surrender, # but a few seconds later, NBC, ABC and Mutual also flashed the word # of surrender, all of whom interrupting the bells of Big Ben in # London which were to precede Mr. Attlee's speech. # From Paul Eggert (2003-02-09): It was Robert St John, not Bob Trout. From # Myrna Oliver's obituary of St John on page B16 of today's Los Angeles Times: # # ... a war-weary U.S. clung to radios, awaiting word of Japan's surrender. # Any announcement from Asia would reach St. John's New York newsroom on a # wire service teletype machine, which had prescribed signals for major news. # Associated Press, for example, would ring five bells before spewing out # typed copy of an important story, and 10 bells for news "of transcendental # importance." # # On Aug. 14, stalling while talking steadily into the NBC networks' open # microphone, St. John heard five bells and waited only to hear a sixth bell, # before announcing confidently: "Ladies and gentlemen, World War II is over. # The Japanese have agreed to our surrender terms." # # He had scored a 20-second scoop on other broadcasters. # From Arthur David Olson (2005-08-22): # Paul has been careful to use the "US" rules only in those locations # that are part of the United States; this reflects the real scope of # U.S. government action. So even though the "US" rules have changed # in the latest release, other countries won't be affected. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule US 1918 1919 - Mar lastSun 2:00 1:00 D Rule US 1918 1919 - Oct lastSun 2:00 0 S Rule US 1942 only - Feb 9 2:00 1:00 W # War Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace Rule US 1945 only - Sep lastSun 2:00 0 S Rule US 1967 2006 - Oct lastSun 2:00 0 S Rule US 1967 1973 - Apr lastSun 2:00 1:00 D Rule US 1974 only - Jan 6 2:00 1:00 D Rule US 1975 only - Feb 23 2:00 1:00 D Rule US 1976 1986 - Apr lastSun 2:00 1:00 D Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D Rule US 2007 max - Mar Sun>=8 2:00 1:00 D Rule US 2007 max - Nov Sun>=1 2:00 0 S # From Arthur David Olson, 2005-12-19 # We generate the files specified below to guard against old files with # obsolete information being left in the time zone binary directory. # We limit the list to names that have appeared in previous versions of # this time zone package. # We do these as separate Zones rather than as Links to avoid problems if # a particular place changes whether it observes DST. # We put these specifications here in the northamerica file both to # increase the chances that they'll actually get compiled and to # avoid the need to duplicate the US rules in another file. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone EST -5:00 - EST Zone MST -7:00 - MST Zone HST -10:00 - HST Zone EST5EDT -5:00 US E%sT Zone CST6CDT -6:00 US C%sT Zone MST7MDT -7:00 US M%sT Zone PST8PDT -8:00 US P%sT # From Bob Devine (1988-01-28): # ...Alaska (and Hawaii) had the timezone names changed in 1967. # old new # Pacific Standard Time(PST) -same- # Yukon Standard Time(YST) -same- # Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST) # Nome Standard Time (NT) Bering Standard Time (BST) # # ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz. # The YST zone now covers nearly all of the state, AHST just part # of the Aleutian islands. No DST. # From Paul Eggert (1995-12-19): # The tables below use 'NST', not 'NT', for Nome Standard Time. # I invented 'CAWT' for Central Alaska War Time. # From U. S. Naval Observatory (1989-01-19): # USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON # USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30 # USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON # USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30 # USA MOUNTAIN 7 H BEHIND UTC DENVER # USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30 # USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO # USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30 # USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST) # USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT) # USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W # USA " 9 H BEHIND UTC APR 3 - OCT 30 # USA HAWAII 10 H BEHIND UTC # USA BERING 11 H BEHIND UTC SAMOA, MIDWAY # From Arthur David Olson (1989-01-21): # The above dates are for 1988. # Note the "AKST" and "AKDT" abbreviations, the claim that there's # no DST in Samoa, and the claim that there is DST in Alaska and the # Aleutians. # From Arthur David Olson (1988-02-13): # Legal standard time zone names, from United States Code (1982 Edition and # Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names # up to 1967-04-01 (when most provisions of the Uniform Time Act of 1966 # took effect), as explained in sections 263 and 261: # (none) # United States standard eastern time # United States standard mountain time # United States standard central time # United States standard Pacific time # (none) # United States standard Alaska time # (none) # Next, names from 1967-04-01 until 1983-11-30 (the date for # public law 98-181): # Atlantic standard time # eastern standard time # central standard time # mountain standard time # Pacific standard time # Yukon standard time # Alaska-Hawaii standard time # Bering standard time # And after 1983-11-30: # Atlantic standard time # eastern standard time # central standard time # mountain standard time # Pacific standard time # Alaska standard time # Hawaii-Aleutian standard time # Samoa standard time # The law doesn't give abbreviations. # # From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: # Public law 106-564 (2000-12-23) introduced the abbreviation # "Chamorro Standard Time" for time in Guam and the Northern Marianas. # See the file "australasia". # From Arthur David Olson, 2005-08-09 # The following was signed into law on 2005-08-08. # # H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS. # (a) Amendment.--Section 3(a) of the Uniform Time Act of 1966 (15 # U.S.C. 260a(a)) is amended-- # (1) by striking "first Sunday of April" and inserting "second # Sunday of March"; and # (2) by striking "last Sunday of October" and inserting "first # Sunday of November'. # (b) Effective Date.--Subsection (a) shall take effect 1 year after the # date of enactment of this Act or March 1, 2007, whichever is later. # (c) Report to Congress.--Not later than 9 months after the effective # date stated in subsection (b), the Secretary shall report to Congress # on the impact of this section on energy consumption in the United # States. # (d) Right to Revert.--Congress retains the right to revert the # Daylight Saving Time back to the 2005 time schedules once the # Department study is complete. # US eastern time, represented by New York # Connecticut, Delaware, District of Columbia, most of Florida, # Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky # (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts, # New Hampshire, New Jersey, New York, North Carolina, Ohio, # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee, # Vermont, Virginia, West Virginia # From Dave Cantor (2004-11-02): # Early this summer I had the occasion to visit the Mount Washington # Observatory weather station atop (of course!) Mount Washington [, NH].... # One of the staff members said that the station was on Eastern Standard Time # and didn't change their clocks for Daylight Saving ... so that their # reports will always have times which are 5 hours behind UTC. # From Paul Eggert (2005-08-26): # According to today's Huntsville Times # http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1 # a few towns on Alabama's "eastern border with Georgia, such as Phenix City # in Russell County, Lanett in Chambers County and some towns in Lee County, # set their watches and clocks on Eastern time." It quotes H.H. "Bubba" # Roberts, city administrator in Phenix City. as saying "We are in the Central # time zone, but we do go by the Eastern time zone because so many people work # in Columbus." # From Paul Eggert (2014-09-06): # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208 # says that New York City Hall time was 3 minutes 58.4 seconds fast of # Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the # nearest second. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule NYC 1920 only - Mar lastSun 2:00 1:00 D Rule NYC 1920 only - Oct lastSun 2:00 0 S Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 -5:00 US E%sT 1946 -5:00 NYC E%sT 1967 -5:00 US E%sT # US central time, represented by Chicago # Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia, # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and # Washington counties), Illinois, western Indiana # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota, # western Tennessee, most of Texas, Wisconsin # From Larry M. Smith (2006-04-26) re Wisconsin: # http://www.legis.state.wi.us/statutes/Stat0175.pdf ... # is currently enforced at the 01:00 time of change. Because the local # "bar time" in the state corresponds to 02:00, a number of citations # are issued for the "sale of class 'B' alcohol after prohibited # hours" within the deviated hour of this change every year.... # # From Douglas R. Bomberg (2007-03-12): # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI # Statue 175 closer in synch with the US Congress' intent.... # http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Chicago 1920 only - Jun 13 2:00 1:00 D Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 -6:00 US C%sT 1920 -6:00 Chicago C%sT 1936 Mar 1 2:00 -5:00 - EST 1936 Nov 15 2:00 -6:00 Chicago C%sT 1942 -6:00 US C%sT 1946 -6:00 Chicago C%sT 1967 -6:00 US C%sT # Oliver County, ND switched from mountain to central time on 1992-10-25. Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 -7:00 US M%sT 1992 Oct 25 2:00 -6:00 US C%sT # Morton County, ND, switched from mountain to central time on # 2003-10-26, except for the area around Mandan which was already central time. # See . # Officially this switch also included part of Sioux County, and # Jones, Mellette, and Todd Counties in South Dakota; # but in practice these other counties were already observing central time. # See . Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21 -7:00 US M%sT 2003 Oct 26 2:00 -6:00 US C%sT # From Josh Findley (2011-01-21): # ...it appears that Mercer County, North Dakota, changed from the # mountain time zone to the central time zone at the last transition from # daylight-saving to standard time (on Nov. 7, 2010): # http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm # http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html # From Andy Lipscomb (2011-01-24): # ...according to the Census Bureau, the largest city is Beulah (although # it's commonly referred to as Beulah-Hazen, with Hazen being the next # largest city in Mercer County). Google Maps places Beulah's city hall # at 47 degrees 15' 51" N, 101 degrees 46' 40" W, which yields an offset # of 6h47'07". Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53 -7:00 US M%sT 2010 Nov 7 2:00 -6:00 US C%sT # US mountain time, represented by Denver # # Colorado, far western Kansas, Montana, western # Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City), # New Mexico, southwestern North Dakota, # western South Dakota, far western Texas (El Paso County, Hudspeth County, # and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D Rule Denver 1920 only - Oct lastSun 2:00 0 S Rule Denver 1921 only - May 22 2:00 0 S Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D Rule Denver 1965 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 -7:00 US M%sT 1920 -7:00 Denver M%sT 1942 -7:00 US M%sT 1946 -7:00 Denver M%sT 1967 -7:00 US M%sT # US Pacific time, represented by Los Angeles # # California, northern Idaho (Benewah, Bonner, Boundary, Clearwater, # Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county # north of the Salmon River, and the towns of Burgdorf and Warren), # Nevada (except West Wendover), Oregon (except the northern 3/4 of # Malheur county), and Washington # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule CA 1948 only - Mar 14 2:00 1:00 D Rule CA 1949 only - Jan 1 2:00 0 S Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D Rule CA 1950 1961 - Sep lastSun 2:00 0 S Rule CA 1962 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 -8:00 US P%sT 1946 -8:00 CA P%sT 1967 -8:00 US P%sT # Alaska # AK%sT is the modern abbreviation for -9:00 per USNO. # # From Paul Eggert (2001-05-30): # Howse writes that Alaska switched from the Julian to the Gregorian calendar, # and from east-of-GMT to west-of-GMT days, when the US bought it from Russia. # This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian, # also a Friday. Include only the time zone part of this transition, # ignoring the switch from Julian to Gregorian, since we can't represent # the Julian calendar. # # As far as we know, none of the exact locations mentioned below were # permanently inhabited in 1867 by anyone using either calendar. # (Yakutat was colonized by the Russians in 1799, but the settlement # was destroyed in 1805 by a Yakutat-kon war party.) However, there # were nearby inhabitants in some cases and for our purposes perhaps # it's best to simply use the official transition. # From Paul Eggert (2014-07-18): # One opinion of the early-1980s turmoil in Alaska over time zones and # daylight saving time appeared as graffiti on a Juneau airport wall: # "Welcome to Juneau. Please turn your watch back to the 19th century." # See: Turner W. Alaska's four time zones now two. NY Times 1983-11-01. # http://www.nytimes.com/1983/11/01/us/alaska-s-four-time-zones-now-two.html # # Steve Ferguson (2011-01-31) referred to the following source: # Norris F. Keeping time in Alaska: national directives, local response. # Alaska History 2001;16(1-2). # http://alaskahistoricalsociety.org/discover-alaska/glimpses-of-the-past/keeping-time-in-alaska/ # From Arthur David Olson (2011-02-01): # Here's database-relevant material from the 2001 "Alaska History" article: # # On September 20 [1979]...DOT...officials decreed that on April 27, # 1980, Juneau and other nearby communities would move to Yukon Time. # Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on # Pacific Time. # # ...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the # Department's September 1979 decision. Juneau and other communities in # northern Southeast reverted to Pacific Time on October 26. # # On October 28 [1983]...the Metlakatla Indian Community Council voted # unanimously to keep the reservation on Pacific Time. # # According to DOT official Joanne Petrie, Indian reservations are not # bound to follow time zones imposed by neighboring jurisdictions. # # (The last is consistent with how the database now handles the Navajo # Nation.) # From Arthur David Olson (2011-02-09): # I just spoke by phone with a staff member at the Metlakatla Indian # Community office (using contact information available at # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla # It's shortly after 1:00 here on the east coast of the United States; # the staffer said it was shortly after 10:00 there. When I asked whether # that meant they were on Pacific time, they said no - they were on their # own time. I asked about daylight saving; they said it wasn't used. I # did not inquire about practices in the past. # From Arthur David Olson (2011-08-17): # For lack of better information, assume that Metlakatla's # abandonment of use of daylight saving resulted from the 1983 vote. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Juneau 15:02:19 - LMT 1867 Oct 18 -8:57:41 - LMT 1900 Aug 20 12:00 -8:00 - PST 1942 -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1980 Apr 27 2:00 -9:00 US Y%sT 1980 Oct 26 2:00 -8:00 US P%sT 1983 Oct 30 2:00 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Sitka 14:58:47 - LMT 1867 Oct 18 -9:01:13 - LMT 1900 Aug 20 12:00 -8:00 - PST 1942 -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18 -8:46:18 - LMT 1900 Aug 20 12:00 -8:00 - PST 1942 -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 -8:00 - PST Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -9:18:55 - LMT 1900 Aug 20 12:00 -9:00 - YST 1942 -9:00 US Y%sT 1946 -9:00 - YST 1969 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18 -9:59:36 - LMT 1900 Aug 20 12:00 -10:00 - CAT 1942 -10:00 US CAT/CAWT 1945 Aug 14 23:00u -10:00 US CAT/CAPT 1946 # Peace -10:00 - CAT 1967 Apr -10:00 - AHST 1969 -10:00 US AH%sT 1983 Oct 30 2:00 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Nome 12:58:21 - LMT 1867 Oct 18 -11:01:38 - LMT 1900 Aug 20 12:00 -11:00 - NST 1942 -11:00 US N%sT 1946 -11:00 - NST 1967 Apr -11:00 - BST 1969 -11:00 US B%sT 1983 Oct 30 2:00 -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Adak 12:13:21 - LMT 1867 Oct 18 -11:46:38 - LMT 1900 Aug 20 12:00 -11:00 - NST 1942 -11:00 US N%sT 1946 -11:00 - NST 1967 Apr -11:00 - BST 1969 -11:00 US B%sT 1983 Oct 30 2:00 -10:00 US AH%sT 1983 Nov 30 -10:00 US HA%sT # The following switches don't quite make our 1970 cutoff. # # Shanks writes that part of southwest Alaska (e.g. Aniak) # switched from -11:00 to -10:00 on 1968-09-22 at 02:00, # and another part (e.g. Akiak) made the same switch five weeks later. # # From David Flater (2004-11-09): # In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska # Historic Preservation Commission, provided this information, which # suggests that Unalaska deviated from statutory time from early 1967 # possibly until 1983: # # Minutes of the Unalaska City Council Meeting, January 10, 1967: # "Except for St. Paul and Akutan, Unalaska is the only important # location not on Alaska Standard Time. The following resolution was # made by William Robinson and seconded by Henry Swanson: Be it # resolved that the City of Unalaska hereby goes to Alaska Standard # Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday, # January 14, Alaska Standard Time.) This resolution was passed with # three votes for and one against." # Hawaii # From Arthur David Olson (2010-12-09): # "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225 # of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09, # the article is available at # http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf # and indicates that standard time was adopted effective noon, January # 13, 1896 (page 218), that in "1933, the Legislature decreed daylight # saving for the period between the last Sunday of each April and the # last Sunday of each September, but less than a month later repealed the # act," (page 220), that year-round daylight saving time was in effect # from 1942-02-09 to 1945-09-30 (page 221, with no time of day given for # when clocks changed) and that clocks were changed by 30 minutes # effective the second Sunday of June, 1947 (page 219, with no time of # day given for when clocks changed). A footnote for the 1933 changes # cites Session Laws of Hawaii 1933, "Act. 90 (approved 26 Apr. 1933) # and Act 163 (approved 21 May 1933)." # From Arthur David Olson (2011-01-19): # The following is from "Laws of the Territory of Hawaii Passed by the # Seventeenth Legislature: Regular Session 1933," available (as of # 2011-01-19) at American University's Pence Law Library. Page 85: "Act # 90...At 2 o'clock ante meridian of the last Sunday in April of each # year, the standard time of this Territory shall be advanced one # hour...This Act shall take effect upon its approval. Approved this 26th # day of April, A. D. 1933. LAWRENCE M JUDD, Governor of the Territory of # Hawaii." Page 172: "Act 163...Act 90 of the Session Laws of 1933 is # hereby repealed...This Act shall take effect upon its approval, upon # which date the standard time of this Territory shall be restored to # that existing immediately prior to the taking effect of said Act 90. # Approved this 21st day of May, A. D. 1933. LAWRENCE M. JUDD, Governor # of the Territory of Hawaii." # # Note that 1933-05-21 was a Sunday. # We're left to guess the time of day when Act 163 was approved; guess noon. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 -10:30 - HST 1933 Apr 30 2:00 -10:30 1:00 HDT 1933 May 21 12:00 -10:30 - HST 1942 Feb 9 2:00 -10:30 1:00 HDT 1945 Sep 30 2:00 -10:30 - HST 1947 Jun 8 2:00 -10:00 - HST Link Pacific/Honolulu Pacific/Johnston # Now we turn to US areas that have diverged from the consensus since 1970. # Arizona mostly uses MST. # From Paul Eggert (2002-10-20): # # The information in the rest of this paragraph is derived from the # Daylight Saving Time web page # (2002-01-23) # maintained by the Arizona State Library, Archives and Public Records. # Between 1944-01-01 and 1944-04-01 the State of Arizona used standard # time, but by federal law railroads, airlines, bus lines, military # personnel, and some engaged in interstate commerce continued to # observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix # Gazette says that was the date the law changed, and that 04-01 was # the date the state's clocks would change. In 1945 the State of # Arizona used standard time all year, again with exceptions only as # mandated by federal law. Arizona observed DST in 1967, but Arizona # Laws 1968, ch. 183 (effective 1968-03-21) repealed DST. # # Shanks says the 1944 experiment came to an end on 1944-03-17. # Go with the Arizona State Library instead. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 -7:00 US M%sT 1944 Jan 1 0:01 -7:00 - MST 1944 Apr 1 0:01 -7:00 US M%sT 1944 Oct 1 0:01 -7:00 - MST 1967 -7:00 US M%sT 1968 Mar 21 -7:00 - MST # From Arthur David Olson (1988-02-13): # A writer from the Inter Tribal Council of Arizona, Inc., # notes in private correspondence dated 1987-12-28 that "Presently, only the # Navajo Nation participates in the Daylight Saving Time policy, due to its # large size and location in three states." (The "only" means that other # tribal nations don't use DST.) # # From Paul Eggert (2013-08-26): # See America/Denver for a zone appropriate for the Navajo Nation. # Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, # Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, # Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome, # Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, # Teton, Twin Falls, Valley, Washington counties, and the southern # quarter of Idaho county) and eastern Oregon (most of Malheur County) # switched four weeks late in 1974. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 -8:00 US P%sT 1923 May 13 2:00 -7:00 US M%sT 1974 -7:00 - MST 1974 Feb 3 2:00 -7:00 US M%sT # Indiana # # For a map of Indiana's time zone regions, see: # http://en.wikipedia.org/wiki/Time_in_Indiana # # From Paul Eggert (2007-08-17): # Since 1970, most of Indiana has been like America/Indiana/Indianapolis, # with the following exceptions: # # - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, # Vanderburgh, and Warrick counties have been like America/Chicago. # # - Dearborn and Ohio counties have been like America/New_York. # # - Clark, Floyd, and Harrison counties have been like # America/Kentucky/Louisville. # # - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke, # and Switzerland counties have their own time zone histories as noted below. # # Shanks partitioned Indiana into 345 regions, each with its own time history, # and wrote "Even newspaper reports present contradictory information." # Those Hoosiers! Such a flighty and changeable people! # Fortunately, most of the complexity occurred before our cutoff date of 1970. # # Other than Indianapolis, the Indiana place names are so nondescript # that they would be ambiguous if we left them at the 'America' level. # So we reluctantly put them all in a subdirectory 'America/Indiana'. # From Paul Eggert (2014-06-26): # https://www.federalregister.gov/articles/2006/01/20/06-563/standard-time-zone-boundary-in-the-state-of-indiana # says "DOT is relocating the time zone boundary in Indiana to move Starke, # Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the # Eastern Time Zone to the Central Time Zone.... The effective date of # this rule is 2 a.m. EST Sunday, April 2, 2006, which is the # changeover date from standard time to Daylight Saving Time." # Strictly speaking, this meant the affected counties changed their # clocks twice that night, but this obviously was in error. The intent # was that 01:59:59 EST be followed by 02:00:00 CDT. # From Gwillim Law (2007-02-10): # The Associated Press has been reporting that Pulaski County, Indiana is # going to switch from Central to Eastern Time on March 11, 2007.... # http://www.indystar.com/apps/pbcs.dll/article?AID=/20070207/LOCAL190108/702070524/0/LOCAL # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 -6:00 US C%sT 1920 -6:00 Indianapolis C%sT 1942 -6:00 US C%sT 1946 -6:00 Indianapolis C%sT 1955 Apr 24 2:00 -5:00 - EST 1957 Sep 29 2:00 -6:00 - CST 1958 Apr 27 2:00 -5:00 - EST 1969 -5:00 US E%sT 1971 -5:00 - EST 2006 -5:00 US E%sT # # Eastern Crawford County, Indiana, left its clocks alone in 1974, # as well as from 1976 through 2005. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D Rule Marengo 1951 only - Sep lastSun 2:00 0 S Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 -6:00 US C%sT 1951 -6:00 Marengo C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 -5:00 US E%sT 1974 Jan 6 2:00 -6:00 1:00 CDT 1974 Oct 27 2:00 -5:00 US E%sT 1976 -5:00 - EST 2006 -5:00 US E%sT # # Daviess, Dubois, Knox, and Martin Counties, Indiana, # switched from eastern to central time in April 2006, then switched back # in November 2007. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Vincennes 1946 only - Apr lastSun 2:00 1:00 D Rule Vincennes 1946 only - Sep lastSun 2:00 0 S Rule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D Rule Vincennes 1953 1959 - Sep lastSun 2:00 0 S Rule Vincennes 1955 only - May 1 0:00 1:00 D Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D Rule Vincennes 1960 only - Oct lastSun 2:00 0 S Rule Vincennes 1961 only - Sep lastSun 2:00 0 S Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 -6:00 US C%sT 1946 -6:00 Vincennes C%sT 1964 Apr 26 2:00 -5:00 - EST 1969 -5:00 US E%sT 1971 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT 2007 Nov 4 2:00 -5:00 US E%sT # # Perry County, Indiana, switched from eastern to central time in April 2006. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Perry 1946 only - Apr lastSun 2:00 1:00 D Rule Perry 1946 only - Sep lastSun 2:00 0 S Rule Perry 1953 1954 - Apr lastSun 2:00 1:00 D Rule Perry 1953 1959 - Sep lastSun 2:00 0 S Rule Perry 1955 only - May 1 0:00 1:00 D Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D Rule Perry 1960 only - Oct lastSun 2:00 0 S Rule Perry 1961 only - Sep lastSun 2:00 0 S Rule Perry 1962 1963 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57 -6:00 US C%sT 1946 -6:00 Perry C%sT 1964 Apr 26 2:00 -5:00 - EST 1969 -5:00 US E%sT 1971 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT # # Pike County, Indiana moved from central to eastern time in 1977, # then switched back in 2006, then switched back again in 2007. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Pike 1955 only - May 1 0:00 1:00 D Rule Pike 1955 1960 - Sep lastSun 2:00 0 S Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D Rule Pike 1961 1964 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53 -6:00 US C%sT 1955 -6:00 Pike C%sT 1965 Apr 25 2:00 -5:00 - EST 1966 Oct 30 2:00 -6:00 US C%sT 1977 Oct 30 2:00 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT 2007 Nov 4 2:00 -5:00 US E%sT # # Starke County, Indiana moved from central to eastern time in 1991, # then switched back in 2006. # From Arthur David Olson (1991-10-28): # An article on page A3 of the Sunday, 1991-10-27 Washington Post # notes that Starke County switched from Central time to Eastern time as of # 1991-10-27. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D Rule Starke 1947 1954 - Sep lastSun 2:00 0 S Rule Starke 1955 1956 - Oct lastSun 2:00 0 S Rule Starke 1957 1958 - Sep lastSun 2:00 0 S Rule Starke 1959 1961 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 -6:00 US C%sT 1947 -6:00 Starke C%sT 1962 Apr 29 2:00 -5:00 - EST 1963 Oct 27 2:00 -6:00 US C%sT 1991 Oct 27 2:00 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT # # Pulaski County, Indiana, switched from eastern to central time in # April 2006 and then switched back in March 2007. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 -6:00 US C%sT 1946 -6:00 Pulaski C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 -5:00 US E%sT 1971 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT 2007 Mar 11 2:00 -5:00 US E%sT # # Switzerland County, Indiana, did not observe DST from 1973 through 2005. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 -6:00 US C%sT 1954 Apr 25 2:00 -5:00 - EST 1969 -5:00 US E%sT 1973 -5:00 - EST 2006 -5:00 US E%sT # Part of Kentucky left its clocks alone in 1974. # This also includes Clark, Floyd, and Harrison counties in Indiana. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Louisville 1921 only - May 1 2:00 1:00 D Rule Louisville 1921 only - Sep 1 2:00 0 S Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D Rule Louisville 1941 only - Sep lastSun 2:00 0 S Rule Louisville 1946 only - Jun 2 2:00 0 S Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 -6:00 US C%sT 1921 -6:00 Louisville C%sT 1942 -6:00 US C%sT 1946 -6:00 Louisville C%sT 1961 Jul 23 2:00 -5:00 - EST 1968 -5:00 US E%sT 1974 Jan 6 2:00 -6:00 1:00 CDT 1974 Oct 27 2:00 -5:00 US E%sT # # Wayne County, Kentucky # # From Lake Cumberland LIFE # http://www.lake-cumberland.com/life/archive/news990129time.shtml # (1999-01-29) via WKYM-101.7: # Clinton County has joined Wayne County in asking the DoT to change from # the Central to the Eastern time zone.... The Wayne County government made # the same request in December. And while Russell County officials have not # taken action, the majority of respondents to a poll conducted there in # August indicated they would like to change to "fast time" also. # The three Lake Cumberland counties are the farthest east of any U.S. # location in the Central time zone. # # From Rich Wales (2000-08-29): # After prolonged debate, and despite continuing deep differences of opinion, # Wayne County (central Kentucky) is switching from Central (-0600) to Eastern # (-0500) time. They won't "fall back" this year. See Sara Shipley, # The difference an hour makes, Nando Times (2000-08-29 15:33 -0400). # # From Paul Eggert (2001-07-16): # The final rule was published in the # Federal Register 65, 160 (2000-08-17), pp 50154-50158. # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22 # Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 -6:00 US C%sT 1946 -6:00 - CST 1968 -6:00 US C%sT 2000 Oct 29 2:00 -5:00 US E%sT # From Rives McDow (2000-08-30): # Here ... are all the changes in the US since 1985. # Kearny County, KS (put all of county on central; # previously split between MST and CST) ... 1990-10 # Starke County, IN (from CST to EST) ... 1991-10 # Oliver County, ND (from MST to CST) ... 1992-10 # West Wendover, NV (from PST TO MST) ... 1999-10 # Wayne County, KY (from CST to EST) ... 2000-10 # # From Paul Eggert (2001-07-17): # We don't know where the line used to be within Kearny County, KS, # so omit that change for now. # See America/Indiana/Knox for the Starke County, IN change. # See America/North_Dakota/Center for the Oliver County, ND change. # West Wendover, NV officially switched from Pacific to mountain time on # 1999-10-31. See the # Federal Register 64, 203 (1999-10-21), pp 56705-56707. # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15 # However, the Federal Register says that West Wendover already operated # on mountain time, and the rule merely made this official; # hence a separate tz entry is not needed. # Michigan # # From Bob Devine (1988-01-28): # Michigan didn't observe DST from 1968 to 1973. # # From Paul Eggert (1999-03-31): # Shanks writes that Michigan started using standard time on 1885-09-18, # but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01) # that Detroit kept # # local time until 1900 when the City Council decreed that clocks should # be put back twenty-eight minutes to Central Standard Time. Half the # city obeyed, half refused. After considerable debate, the decision # was rescinded and the city reverted to Sun time. A derisive offer to # erect a sundial in front of the city hall was referred to the # Committee on Sewers. Then, in 1905, Central time was adopted # by city vote. # # This story is too entertaining to be false, so go with Howse over Shanks. # # From Paul Eggert (2001-03-06): # Garland (1927) writes "Cleveland and Detroit advanced their clocks # one hour in 1914." This change is not in Shanks. We have no more # info, so omit this for now. # # Most of Michigan observed DST from 1973 on, but was a bit late in 1975. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D Rule Detroit 1948 only - Sep lastSun 2:00 0 S Rule Detroit 1967 only - Jun 14 2:00 1:00 D Rule Detroit 1967 only - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Detroit -5:32:11 - LMT 1905 -6:00 - CST 1915 May 15 2:00 -5:00 - EST 1942 -5:00 US E%sT 1946 -5:00 Detroit E%sT 1973 -5:00 US E%sT 1975 -5:00 - EST 1975 Apr 27 2:00 -5:00 US E%sT # # Dickinson, Gogebic, Iron, and Menominee Counties, Michigan, # switched from EST to CST/CDT in 1973. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D Rule Menominee 1946 only - Sep lastSun 2:00 0 S Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D Rule Menominee 1966 only - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 -6:00 US C%sT 1946 -6:00 Menominee C%sT 1969 Apr 27 2:00 -5:00 - EST 1973 Apr 29 2:00 -6:00 US C%sT # Navassa # administered by the US Fish and Wildlife Service # claimed by US under the provisions of the 1856 Guano Islands Act # also claimed by Haiti # occupied 1857/1900 by the Navassa Phosphate Co # US lighthouse 1917/1996-09 # currently uninhabited # see Mark Fineman, "An Isle Rich in Guano and Discord", # _Los Angeles Times_ (1998-11-10), A1, A10; it cites # Jimmy Skaggs, _The Great Guano Rush_ (1994). ################################################################################ # From Paul Eggert (2014-10-31): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), # San Diego: ACS Publications, Inc. (2003). # Unfortunately this book contains many errors and cites no sources. # # Gwillim Law writes that a good source # for recent time zone data is the International Air Transport # Association's Standard Schedules Information Manual (IATA SSIM), # published semiannually. Law sent in several helpful summaries # of the IATA's data after 1990. Except where otherwise noted, # IATA SSIM is the source for entries after 1990. # # Other sources occasionally used include: # # Edward W. Whitman, World Time Differences, # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), # which I found in the UCLA library. # # William Willett, The Waste of Daylight, 19th edition # # [PDF] (1914-03) # # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 # . # # See the 'europe' file for Greenland. # Canada # From Alain LaBonté (1994-11-14): # I post here the time zone abbreviations standardized in Canada # for both English and French in the CAN/CSA-Z234.4-89 standard.... # # UTC Standard time Daylight saving time # offset French English French English # -2:30 - - HAT NDT # -3 - - HAA ADT # -3:30 HNT NST - - # -4 HNA AST HAE EDT # -5 HNE EST HAC CDT # -6 HNC CST HAR MDT # -7 HNR MST HAP PDT # -8 HNP PST HAY YDT # -9 HNY YST - - # # HN: Heure Normale ST: Standard Time # HA: Heure Avancée DT: Daylight saving Time # # A: de l'Atlantique Atlantic # C: du Centre Central # E: de l'Est Eastern # M: Mountain # N: Newfoundland # P: du Pacifique Pacific # R: des Rocheuses # T: de Terre-Neuve # Y: du Yukon Yukon # # From Paul Eggert (1994-11-22): # Alas, this sort of thing must be handled by localization software. # Unless otherwise specified, the data entries for Canada are all from Shanks # & Pottenger. # From Chris Walton (2006-04-01, 2006-04-25, 2006-06-26, 2007-01-31, # 2007-03-01): # The British Columbia government announced yesterday that it will # adjust daylight savings next year to align with changes in the # U.S. and the rest of Canada.... # http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm # ... # Nova Scotia # Daylight saving time will be extended by four weeks starting in 2007.... # http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf # # [For New Brunswick] the new legislation dictates that the time change is to # be done at 02:00 instead of 00:01. # http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf # ... # Manitoba has traditionally changed the clock every fall at 03:00. # As of 2006, the transition is to take place one hour earlier at 02:00. # http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php # ... # [Alberta, Ontario, Quebec] will follow US rules. # http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM # http://www.e-laws.gov.on.ca/DBLaws/Source/Regs/English/2006/R06111_e.htm # http://www2.publicationsduquebec.gouv.qc.ca/dynamicSearch/telecharge.php?type=5&file=2006C39A.PDF # ... # P.E.I. will follow US rules.... # http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf # ... # Province of Newfoundland and Labrador.... # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm # ... # Yukon # http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf # ... # N.W.T. will follow US rules. Whoever maintains the government web site # does not seem to believe in bookmarks. To see the news release, click the # following link and search for "Daylight Savings Time Change". Press the # "Daylight Savings Time Change" link; it will fire off a popup using # JavaScript. # http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive # ... # Nunavut # An amendment to the Interpretation Act was registered on February 19/2007.... # http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf # From Paul Eggert (2014-10-18): # H. David Matthews and Mary Vincent's map # "It's about TIME", _Canadian Geographic_ (September-October 1998) # http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp # contains detailed boundaries for regions observing nonstandard # time and daylight saving time arrangements in Canada circa 1998. # # National Research Council Canada maintains info about time zones and DST. # http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html # http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5 # Its unofficial information is often taken from Matthews and Vincent. # From Paul Eggert (2006-06-27): # For now, assume all of DST-observing Canada will fall into line with the # new US DST rules, # From Chris Walton (2011-12-01) # In the first of Tammy Hardwick's articles # http://www.ilovecreston.com/?p=articles&t=spec&ar=260 # she quotes the Friday November 1/1918 edition of the Creston Review. # The quote includes these two statements: # 'Sunday the CPR went back to the old system of time...' # '... The daylight saving scheme was dropped all over Canada at the same time,' # These statements refer to a transition from daylight time to standard time # that occurred nationally on Sunday October 27/1918. This transition was # also documented in the Saturday October 26/1918 edition of the Toronto Star. # In light of that evidence, we alter the date from the earlier believed # Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day # than Thursday) in all Canadian rulesets. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Canada 1918 only - Apr 14 2:00 1:00 D Rule Canada 1918 only - Oct 27 2:00 0 S Rule Canada 1942 only - Feb 9 2:00 1:00 W # War Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Canada 1945 only - Sep 30 2:00 0 S Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D Rule Canada 1974 2006 - Oct lastSun 2:00 0 S Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D Rule Canada 2007 max - Nov Sun>=1 2:00 0 S # Newfoundland and Labrador # From Paul Eggert (2000-10-02): # Matthews and Vincent (1998) write that Labrador should use NST/NDT, # but the only part of Labrador that follows the rules is the # southeast corner, including Port Hope Simpson and Mary's Harbour, # but excluding, say, Black Tickle. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule StJohns 1917 only - Apr 8 2:00 1:00 D Rule StJohns 1917 only - Sep 17 2:00 0 S # Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks & Pottenger. Rule StJohns 1919 only - May 5 23:00 1:00 D Rule StJohns 1919 only - Aug 12 23:00 0 S # For 1931-1935 Whitman gives Apr same date; go with Shanks & Pottenger. Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S # For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks & # Pottenger. Rule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D Rule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S # Whitman gives the following transitions: # 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07 # but go with Shanks & Pottenger and assume they used Canadian rules. # For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives # Apr 30 - Sep 24; go with Shanks & Pottenger. Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S Rule StJohns 1960 1986 - Oct lastSun 2:00 0 S # From Paul Eggert (2000-10-02): # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches # at 00:01 local time. For now, assume it started in 1987. # From Michael Pelley (2011-09-12): # We received today, Monday, September 12, 2011, notification that the # changes to the Newfoundland Standard Time Act have been proclaimed. # The change in the Act stipulates that the change from Daylight Savings # Time to Standard Time and from Standard Time to Daylight Savings Time # now occurs at 2:00AM. # ... # http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm # ... # MICHAEL PELLEY | Manager of Enterprise Architecture - Solution Delivery # Office of the Chief Information Officer # Executive Council # Government of Newfoundland & Labrador Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S # # St John's has an apostrophe, but Posix file names can't have apostrophes. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/St_Johns -3:30:52 - LMT 1884 -3:30:52 StJohns N%sT 1918 -3:30:52 Canada N%sT 1919 -3:30:52 StJohns N%sT 1935 Mar 30 -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 -3:30 StJohns N%sT 2011 Nov -3:30 Canada N%sT # most of east Labrador # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay -3:30:52 - NST 1918 -3:30:52 Canada N%sT 1919 -3:30:52 - NST 1935 Mar 30 -3:30 - NST 1936 -3:30 StJohns N%sT 1942 May 11 -3:30 Canada N%sT 1946 -3:30 StJohns N%sT 1966 Mar 15 2:00 -4:00 StJohns A%sT 2011 Nov -4:00 Canada A%sT # west Labrador, Nova Scotia, Prince Edward I # From Paul Eggert (2006-03-22): # Shanks & Pottenger write that since 1970 most of this region has been like # Halifax. Many locales did not observe peacetime DST until 1972; # Glace Bay, NS is the largest that we know of. # Shanks & Pottenger also write that Liverpool, NS was the only town # in Canada to observe DST in 1971 but not 1970; for now we'll assume # this is a typo. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Halifax 1916 only - Apr 1 0:00 1:00 D Rule Halifax 1916 only - Oct 1 0:00 0 S Rule Halifax 1920 only - May 9 0:00 1:00 D Rule Halifax 1920 only - Aug 29 0:00 0 S Rule Halifax 1921 only - May 6 0:00 1:00 D Rule Halifax 1921 1922 - Sep 5 0:00 0 S Rule Halifax 1922 only - Apr 30 0:00 1:00 D Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D Rule Halifax 1923 only - Sep 4 0:00 0 S Rule Halifax 1924 only - Sep 15 0:00 0 S Rule Halifax 1925 only - Sep 28 0:00 0 S Rule Halifax 1926 only - May 16 0:00 1:00 D Rule Halifax 1926 only - Sep 13 0:00 0 S Rule Halifax 1927 only - May 1 0:00 1:00 D Rule Halifax 1927 only - Sep 26 0:00 0 S Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D Rule Halifax 1928 only - Sep 9 0:00 0 S Rule Halifax 1929 only - Sep 3 0:00 0 S Rule Halifax 1930 only - Sep 15 0:00 0 S Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S Rule Halifax 1932 only - May 1 0:00 1:00 D Rule Halifax 1933 only - Apr 30 0:00 1:00 D Rule Halifax 1933 only - Oct 2 0:00 0 S Rule Halifax 1934 only - May 20 0:00 1:00 D Rule Halifax 1934 only - Sep 16 0:00 0 S Rule Halifax 1935 only - Jun 2 0:00 1:00 D Rule Halifax 1935 only - Sep 30 0:00 0 S Rule Halifax 1936 only - Jun 1 0:00 1:00 D Rule Halifax 1936 only - Sep 14 0:00 0 S Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S Rule Halifax 1939 only - May 28 0:00 1:00 D Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Halifax -4:14:24 - LMT 1902 Jun 15 -4:00 Halifax A%sT 1918 -4:00 Canada A%sT 1919 -4:00 Halifax A%sT 1942 Feb 9 2:00s -4:00 Canada A%sT 1946 -4:00 Halifax A%sT 1974 -4:00 Canada A%sT Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15 -4:00 Canada A%sT 1953 -4:00 Halifax A%sT 1954 -4:00 - AST 1972 -4:00 Halifax A%sT 1974 -4:00 Canada A%sT # New Brunswick # From Paul Eggert (2007-01-31): # The Time Definition Act # says they changed at 00:01 through 2006, and # makes it # clear that this was the case since at least 1993. # For now, assume it started in 1993. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D Rule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S Rule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D Rule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S Rule Moncton 1939 only - May 27 1:00 1:00 D Rule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S Rule Moncton 1940 only - May 19 1:00 1:00 D Rule Moncton 1941 only - May 4 1:00 1:00 D Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 -5:00 - EST 1902 Jun 15 -4:00 Canada A%sT 1933 -4:00 Moncton A%sT 1942 -4:00 Canada A%sT 1946 -4:00 Moncton A%sT 1973 -4:00 Canada A%sT 1993 -4:00 Moncton A%sT 2007 -4:00 Canada A%sT # Quebec -# From Paul Eggert (2013-08-30): -# Since 1970 most of Quebec has been like Toronto. -# However, because earlier versions of the tz database mistakenly relied on data -# from Shanks & Pottenger saying that Quebec differed from Ontario after 1970, -# a separate entry was created for most of Quebec. We're loath to lose -# its pre-1970 info, even though the tz database is normally limited to -# zones that differ after 1970, so keep this otherwise out-of-scope entry. - +# From Paul Eggert (2015-03-24): +# See America/Toronto for most of Quebec, including Montreal. +# # Matthews and Vincent (1998) also write that Quebec east of the -63 # meridian is supposed to observe AST, but residents as far east as # Natashquan use EST/EDT, and residents east of Natashquan use AST. # The Quebec department of justice writes in # "The situation in Minganie and Basse-Côte-Nord" # http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm # that the coastal strip from just east of Natashquan to Blanc-Sablon # observes Atlantic standard time all year round. # http://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en # says this common practice was codified into law as of 2007. # For lack of better info, guess this practice began around 1970, contra to # Shanks & Pottenger who have this region observing AST/ADT. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Mont 1917 only - Mar 25 2:00 1:00 D -Rule Mont 1917 only - Apr 24 0:00 0 S -Rule Mont 1919 only - Mar 31 2:30 1:00 D -Rule Mont 1919 only - Oct 25 2:30 0 S -Rule Mont 1920 only - May 2 2:30 1:00 D -Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S -Rule Mont 1921 only - May 1 2:00 1:00 D -Rule Mont 1922 only - Apr 30 2:00 1:00 D -Rule Mont 1924 only - May 17 2:00 1:00 D -Rule Mont 1924 1926 - Sep lastSun 2:30 0 S -Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D -Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D -Rule Mont 1927 1937 - Sep lastSat 24:00 0 S -Rule Mont 1938 1940 - Apr lastSun 0:00 1:00 D -Rule Mont 1938 1939 - Sep lastSun 0:00 0 S -Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D -Rule Mont 1945 1948 - Sep lastSun 2:00 0 S -Rule Mont 1949 1950 - Oct lastSun 2:00 0 S -Rule Mont 1951 1956 - Sep lastSun 2:00 0 S -Rule Mont 1957 1973 - Oct lastSun 2:00 0 S - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Blanc-Sablon -3:48:28 - LMT 1884 -4:00 Canada A%sT 1970 -4:00 - AST -Zone America/Montreal -4:54:16 - LMT 1884 - -5:00 Mont E%sT 1918 - -5:00 Canada E%sT 1919 - -5:00 Mont E%sT 1942 Feb 9 2:00s - -5:00 Canada E%sT 1946 - -5:00 Mont E%sT 1974 - -5:00 Canada E%sT # Ontario # From Paul Eggert (2006-07-09): # Shanks & Pottenger write that since 1970 most of Ontario has been like # Toronto. # Thunder Bay skipped DST in 1973. # Many smaller locales did not observe peacetime DST until 1974; # Nipigon (EST) and Rainy River (CST) are the largest that we know of. # Far west Ontario is like Winnipeg; far east Quebec is like Halifax. # From Mark Brader (2003-07-26): # [According to the Toronto Star] Orillia, Ontario, adopted DST # effective Saturday, 1912-06-22, 22:00; the article mentions that # Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw # have already done so. In Orillia DST was to run until Saturday, # 1912-08-31 (no time mentioned), but it was met with considerable # hostility from certain segments of the public, and was revoked after # only two weeks - I copied it as Saturday, 1912-07-07, 22:00, but # presumably that should be -07-06. (1912-06-19, -07-12; also letters # earlier in June). # # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21). # From Paul Eggert (1997-10-17): # Mark Brader writes that an article in the 1997-10-14 Toronto Star # says that Atikokan, Ontario currently does not observe DST, # but will vote on 11-10 whether to use EST/EDT. # He also writes that the Ontario Time Act (1990, Chapter T.9) # http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html # says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT. # Officially Atikokan is therefore on CST/CDT, and most likely this report # concerns a non-official time observed as a matter of local practice. # # From Paul Eggert (2000-10-02): # Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and # New Osnaburgh observe CST all year, that Big Trout Lake observes # CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in # violation of the official Ontario rules. # # From Paul Eggert (2006-07-09): # Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the # 2005-07-21 Chronicle-Journal, which said: # # The clocks in Atikokan stay set on standard time year-round. # This means they spend about half the time on central time and # the other half on eastern time. # # For the most part, the system works, Mayor Dennis Brown said. # # "The majority of businesses in Atikokan deal more with Eastern # Canada, but there are some that deal with Western Canada," he # said. "I don't see any changes happening here." # # Walton also writes "Supposedly Pickle Lake and Mishkeegogamang # [New Osnaburgh] follow the same practice." # From Garry McKinnon (2006-07-14) via Chris Walton: # I chatted with a member of my board who has an outstanding memory # and a long history in Atikokan (and in the telecom industry) and he # can say for certain that Atikokan has been practicing the current # time keeping since 1952, at least. # From Paul Eggert (2006-07-17): # Shanks & Pottenger say that Atikokan has agreed with Rainy River # ever since standard time was introduced, but the information from # McKinnon sounds more authoritative. For now, assume that Atikokan # switched to EST immediately after WWII era daylight saving time # ended. This matches the old (less-populous) America/Coral_Harbour # entry since our cutoff date of 1970, so we can move # America/Coral_Harbour to the 'backward' file. # From Mark Brader (2010-03-06): # # Currently the database has: # # # Ontario # # # From Paul Eggert (2006-07-09): # # Shanks & Pottenger write that since 1970 most of Ontario has been like # # Toronto. # # Thunder Bay skipped DST in 1973. # # Many smaller locales did not observe peacetime DST until 1974; # # Nipigon (EST) and Rainy River (CST) are the largest that we know of. # # In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom # right corner of page 1, it says that Toronto will return to standard # time at 2 am Sunday morning (which agrees with the database), and that: # # The one-hour setback will go into effect throughout most of Ontario, # except in areas like Windsor which remains on standard time all year. # # Windsor is, of course, a lot larger than Nipigon. # # I only came across this incidentally. I don't know if Windsor began # observing DST when Detroit did, or in 1974, or on some other date. # # By the way, the article continues by noting that: # # Some cities in the United States have pushed the deadline back # three weeks and will change over from daylight saving in October. # From Arthur David Olson (2010-07-17): # # "Standard Time and Time Zones in Canada" appeared in # The Journal of The Royal Astronomical Society of Canada, # volume 26, number 2 (February 1932) and, as of 2010-07-17, # was available at # http://adsabs.harvard.edu/full/1932JRASC..26...49S # # It includes the text below (starting on page 57): # # A list of the places in Canada using daylight saving time would # require yearly revision. From information kindly furnished by # the provincial governments and by the postmasters in many cities # and towns, it is found that the following places used daylight sav- # ing in 1930. The information for the province of Quebec is definite, # for the other provinces only approximate: # # Province Daylight saving time used # Prince Edward Island Not used. # Nova Scotia In Halifax only. # New Brunswick In St. John only. # Quebec In the following places: # Montreal Lachine # Quebec Mont-Royal # Lévis Iberville # St. Lambert Cap de la Madelèine # Verdun Loretteville # Westmount Richmond # Outremont St. Jérôme # Longueuil Greenfield Park # Arvida Waterloo # Chambly-Canton Beaulieu # Melbourne La Tuque # St. Théophile Buckingham # Ontario Used generally in the cities and towns along # the southerly part of the province. Not # used in the northwesterly part. # Manitoba Not used. # Saskatchewan In Regina only. # Alberta Not used. # British Columbia Not used. # # With some exceptions, the use of daylight saving may be said to be limited # to those cities and towns lying between Quebec city and Windsor, Ont. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Toronto 1919 only - Mar 30 23:30 1:00 D Rule Toronto 1919 only - Oct 26 0:00 0 S Rule Toronto 1920 only - May 2 2:00 1:00 D Rule Toronto 1920 only - Sep 26 0:00 0 S Rule Toronto 1921 only - May 15 2:00 1:00 D Rule Toronto 1921 only - Sep 15 2:00 0 S Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D # Shanks & Pottenger say 1923-09-19; assume it's a typo and that "-16" # was meant. Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D # The 1927-to-1939 rules can be expressed more simply as # Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S # Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D # Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D # Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S # The rules below avoid use of Sun>=25 # (which pre-2004 versions of zic cannot handle). Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D Rule Toronto 1932 only - May 1 2:00 1:00 D Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D Rule Toronto 1933 only - Oct 1 2:00 0 S Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S Rule Toronto 1949 only - Nov lastSun 0:00 0 S Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D Rule Toronto 1950 only - Nov lastSun 2:00 0 S Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S # Shanks & Pottenger say Toronto ended DST a week early in 1971, # namely on 1971-10-24, but Mark Brader wrote (2003-05-31) that this # is wrong, and that he had confirmed it by checking the 1971-10-30 # Toronto Star, which said that DST was ending 1971-10-31 as usual. Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S # From Paul Eggert (2003-07-27): # Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and # Port Arthur, Ontario, the principle of the Bill has been in # operation for the past three years, and in the City of Moose Jaw, # Saskatchewan, for one year." # From David Bryan via Tory Tronrud, Director/Curator, # Thunder Bay Museum (2003-11-12): # There is some suggestion, however, that, by-law or not, daylight # savings time was being practiced in Fort William and Port Arthur # before 1909.... [I]n 1910, the line between the Eastern and Central # Time Zones was permanently moved about two hundred miles west to # include the Thunder Bay area.... When Canada adopted daylight # savings time in 1916, Fort William and Port Arthur, having done so # already, did not change their clocks.... During the Second World # War,... [t]he cities agreed to implement DST during the summer # months for the remainder of the war years. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Toronto -5:17:32 - LMT 1895 -5:00 Canada E%sT 1919 -5:00 Toronto E%sT 1942 Feb 9 2:00s -5:00 Canada E%sT 1946 -5:00 Toronto E%sT 1974 -5:00 Canada E%sT Zone America/Thunder_Bay -5:57:00 - LMT 1895 -6:00 - CST 1910 -5:00 - EST 1942 -5:00 Canada E%sT 1970 -5:00 Toronto E%sT 1973 -5:00 - EST 1974 -5:00 Canada E%sT Zone America/Nipigon -5:53:04 - LMT 1895 -5:00 Canada E%sT 1940 Sep 29 -5:00 1:00 EDT 1942 Feb 9 2:00s -5:00 Canada E%sT Zone America/Rainy_River -6:18:16 - LMT 1895 -6:00 Canada C%sT 1940 Sep 29 -6:00 1:00 CDT 1942 Feb 9 2:00s -6:00 Canada C%sT Zone America/Atikokan -6:06:28 - LMT 1895 -6:00 Canada C%sT 1940 Sep 29 -6:00 1:00 CDT 1942 Feb 9 2:00s -6:00 Canada C%sT 1945 Sep 30 2:00 -5:00 - EST # Manitoba # From Rob Douglas (2006-04-06): # the old Manitoba Time Act - as amended by Bill 2, assented to # March 27, 1987 ... said ... # "between two o'clock Central Standard Time in the morning of # the first Sunday of April of each year and two o'clock Central # Standard Time in the morning of the last Sunday of October next # following, one hour in advance of Central Standard Time."... # I believe that the English legislation [of the old time act] had # been assented to (March 22, 1967).... # Also, as far as I can tell, there was no order-in-council varying # the time of Daylight Saving Time for 2005 and so the provisions of # the 1987 version would apply - the changeover was at 2:00 Central # Standard Time (i.e. not until 3:00 Central Daylight Time). # From Paul Eggert (2006-04-10): # Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s) # starting 1966. Since 02:00s is clearly correct for 1967 on, assume # it was also 02:00s in 1966. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Winn 1916 only - Apr 23 0:00 1:00 D Rule Winn 1916 only - Sep 17 0:00 0 S Rule Winn 1918 only - Apr 14 2:00 1:00 D Rule Winn 1918 only - Oct 27 2:00 0 S Rule Winn 1937 only - May 16 2:00 1:00 D Rule Winn 1937 only - Sep 26 2:00 0 S Rule Winn 1942 only - Feb 9 2:00 1:00 W # War Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Winn 1945 only - Sep lastSun 2:00 0 S Rule Winn 1946 only - May 12 2:00 1:00 D Rule Winn 1946 only - Oct 13 2:00 0 S Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D Rule Winn 1947 1949 - Sep lastSun 2:00 0 S Rule Winn 1950 only - May 1 2:00 1:00 D Rule Winn 1950 only - Sep 30 2:00 0 S Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D Rule Winn 1951 1958 - Sep lastSun 2:00 0 S Rule Winn 1959 only - Oct lastSun 2:00 0 S Rule Winn 1960 only - Sep lastSun 2:00 0 S Rule Winn 1963 only - Apr lastSun 2:00 1:00 D Rule Winn 1963 only - Sep 22 2:00 0 S Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 -6:00 Winn C%sT 2006 -6:00 Canada C%sT # Saskatchewan # From Mark Brader (2003-07-26): # The first actual adoption of DST in Canada was at the municipal # level. As the [Toronto] Star put it (1912-06-07), "While people # elsewhere have long been talking of legislation to save daylight, # the city of Moose Jaw [Saskatchewan] has acted on its own hook." # DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned: # presumably late evening, as below), and would run until "the end of # the summer". The discrepancy between municipal time and railroad # time was noted. # From Paul Eggert (2003-07-27): # Willett (1914-03) notes that DST "has been in operation ... in the # City of Moose Jaw, Saskatchewan, for one year." # From Paul Eggert (2006-03-22): # Shanks & Pottenger say that since 1970 this region has mostly been as Regina. # Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972. # Other western towns (e.g. Lloydminster) are like Edmonton. # Matthews and Vincent (1998) write that Denare Beach and Creighton # are like Winnipeg, in violation of Saskatchewan law. # From W. Jones (1992-11-06): # The. . .below is based on information I got from our law library, the # provincial archives, and the provincial Community Services department. # A precise history would require digging through newspaper archives, and # since you didn't say what you wanted, I didn't bother. # # Saskatchewan is split by a time zone meridian (105W) and over the years # the boundary became pretty ragged as communities near it reevaluated # their affiliations in one direction or the other. In 1965 a provincial # referendum favoured legislating common time practices. # # On 15 April 1966 the Time Act (c. T-14, Revised Statutes of # Saskatchewan 1978) was proclaimed, and established that the eastern # part of Saskatchewan would use CST year round, that districts in # northwest Saskatchewan would by default follow CST but could opt to # follow Mountain Time rules (thus 1 hour difference in the winter and # zero in the summer), and that districts in southwest Saskatchewan would # by default follow MT but could opt to follow CST. # # It took a few years for the dust to settle (I know one story of a town # on one time zone having its school in another, such that a mom had to # serve her family lunch in two shifts), but presently it seems that only # a few towns on the border with Alberta (e.g. Lloydminster) follow MT # rules any more; all other districts appear to have used CST year round # since sometime in the 1960s. # From Chris Walton (2006-06-26): # The Saskatchewan time act which was last updated in 1996 is about 30 pages # long and rather painful to read. # http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Regina 1918 only - Apr 14 2:00 1:00 D Rule Regina 1918 only - Oct 27 2:00 0 S Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D Rule Regina 1937 only - Oct Sun>=8 0:00 0 S Rule Regina 1938 only - Oct Sun>=1 0:00 0 S Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S Rule Regina 1942 only - Feb 9 2:00 1:00 W # War Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Regina 1945 only - Sep lastSun 2:00 0 S Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D Rule Regina 1946 only - Oct Sun>=8 2:00 0 S Rule Regina 1947 1957 - Apr lastSun 2:00 1:00 D Rule Regina 1947 1957 - Sep lastSun 2:00 0 S Rule Regina 1959 only - Apr lastSun 2:00 1:00 D Rule Regina 1959 only - Oct lastSun 2:00 0 S # Rule Swift 1957 only - Apr lastSun 2:00 1:00 D Rule Swift 1957 only - Oct lastSun 2:00 0 S Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D Rule Swift 1959 only - Oct lastSun 2:00 0 S Rule Swift 1960 1961 - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Regina -6:58:36 - LMT 1905 Sep -7:00 Regina M%sT 1960 Apr lastSun 2:00 -6:00 - CST Zone America/Swift_Current -7:11:20 - LMT 1905 Sep -7:00 Canada M%sT 1946 Apr lastSun 2:00 -7:00 Regina M%sT 1950 -7:00 Swift M%sT 1972 Apr lastSun 2:00 -6:00 - CST # Alberta # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D Rule Edm 1918 only - Oct 27 2:00 0 S Rule Edm 1919 only - May 27 2:00 0 S Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D Rule Edm 1920 only - Oct lastSun 2:00 0 S Rule Edm 1921 1923 - Sep lastSun 2:00 0 S Rule Edm 1942 only - Feb 9 2:00 1:00 W # War Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Edm 1945 only - Sep lastSun 2:00 0 S Rule Edm 1947 only - Apr lastSun 2:00 1:00 D Rule Edm 1947 only - Sep lastSun 2:00 0 S Rule Edm 1967 only - Apr lastSun 2:00 1:00 D Rule Edm 1967 only - Oct lastSun 2:00 0 S Rule Edm 1969 only - Apr lastSun 2:00 1:00 D Rule Edm 1969 only - Oct lastSun 2:00 0 S Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D Rule Edm 1972 2006 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Edmonton -7:33:52 - LMT 1906 Sep -7:00 Edm M%sT 1987 -7:00 Canada M%sT # British Columbia # From Paul Eggert (2006-03-22): # Shanks & Pottenger write that since 1970 most of this region has # been like Vancouver. # Dawson Creek uses MST. Much of east BC is like Edmonton. # Matthews and Vincent (1998) write that Creston is like Dawson Creek. # It seems though that (re: Creston) is not entirely correct: # From Chris Walton (2011-12-01): # There are two areas within the Canadian province of British Columbia # that do not currently observe daylight saving: # a) The Creston Valley (includes the town of Creston and surrounding area) # b) The eastern half of the Peace River Regional District # (includes the cities of Dawson Creek and Fort St. John) # Earlier this year I stumbled across a detailed article about the time # keeping history of Creston; it was written by Tammy Hardwick who is the # manager of the Creston & District Museum. The article was written in May 2009. # http://www.ilovecreston.com/?p=articles&t=spec&ar=260 # According to the article, Creston has not changed its clocks since June 1918. # i.e. Creston has been stuck on UTC-7 for 93 years. # Dawson Creek, on the other hand, changed its clocks as recently as April 1972. # Unfortunately the exact date for the time change in June 1918 remains # unknown and will be difficult to ascertain. I e-mailed Tammy a few months # ago to ask if Sunday June 2 was a reasonable guess. She said it was just # as plausible as any other date (in June). She also said that after writing # the article she had discovered another time change in 1916; this is the # subject of another article which she wrote in October 2010. # http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56 # Here is a summary of the three clock change events in Creston's history: # 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7) # Exact date unknown # 2. Oct 1916: switch to Pacific Standard Time (GMT-8) # Exact date in October unknown; Sunday October 1 is a reasonable guess. # 3. June 1918: switch to Pacific Daylight Time (GMT-7) # Exact date in June unknown; Sunday June 2 is a reasonable guess. # note#1: # On Oct 27/1918 when daylight saving ended in the rest of Canada, # Creston did not change its clocks. # note#2: # During WWII when the Federal Government legislated a mandatory clock change, # Creston did not oblige. # note#3: # There is no guarantee that Creston will remain on Mountain Standard Time # (UTC-7) forever. # The subject was debated at least once this year by the town Council. # http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html # During a period WWII, summer time (Daylight saying) was mandatory in Canada. # In Creston, that was handled by shifting the area to PST (-8:00) then applying # summer time to cause the offset to be -7:00, the same as it had been before # the change. It can be argued that the timezone abbreviation during this # period should be PDT rather than MST, but that doesn't seem important enough # (to anyone) to further complicate the rules. # The transition dates (and times) are guesses. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Vanc 1918 only - Apr 14 2:00 1:00 D Rule Vanc 1918 only - Oct 27 2:00 0 S Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Vanc 1945 only - Sep 30 2:00 0 S Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D Rule Vanc 1946 only - Oct 13 2:00 0 S Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Vancouver -8:12:28 - LMT 1884 -8:00 Vanc P%sT 1987 -8:00 Canada P%sT Zone America/Dawson_Creek -8:00:56 - LMT 1884 -8:00 Canada P%sT 1947 -8:00 Vanc P%sT 1972 Aug 30 2:00 -7:00 - MST Zone America/Creston -7:46:04 - LMT 1884 -7:00 - MST 1916 Oct 1 -8:00 - PST 1918 Jun 2 -7:00 - MST # Northwest Territories, Nunavut, Yukon # From Paul Eggert (2006-03-22): # Dawson switched to PST in 1973. Inuvik switched to MST in 1979. # Mathew Englander (1996-10-07) gives the following refs: # * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68, # c. 7 defines Yukon standard time as UTC-9. This is still valid; # see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1). # * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00. # * O.I.C. 1980/02 established DST. # * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00. # Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go # with Englander. # From Chris Walton (2006-06-26): # Here is a link to the old daylight saving portion of the interpretation # act which was last updated in 1987: # http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf # From Rives McDow (1999-09-04): # Nunavut ... moved ... to incorporate the whole territory into one time zone. # Nunavut moves to single time zone Oct. 31 # http://www.nunatsiaq.com/nunavut/nvt90903_13.html # # From Antoine Leca (1999-09-06): # We then need to create a new timezone for the Kitikmeot region of Nunavut # to differentiate it from the Yellowknife region. # From Paul Eggert (1999-09-20): # Basic Facts: The New Territory # http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html # (1999) reports that Pangnirtung operates on eastern time, # and that Coral Harbour does not observe DST. We don't know when # Pangnirtung switched to eastern time; we'll guess 1995. # From Rives McDow (1999-11-08): # On October 31, when the rest of Nunavut went to Central time, # Pangnirtung wobbled. Here is the result of their wobble: # # The following businesses and organizations in Pangnirtung use Central Time: # # First Air, Power Corp, Nunavut Construction, Health Center, RCMP, # Eastern Arctic National Parks, A & D Specialist # # The following businesses and organizations in Pangnirtung use Eastern Time: # # Hamlet office, All other businesses, Both schools, Airport operator # # This has made for an interesting situation there, which warranted the news. # No one there that I spoke with seems concerned, or has plans to # change the local methods of keeping time, as it evidently does not # really interfere with any activities or make things difficult locally. # They plan to celebrate New Year's turn-over twice, one hour apart, # so it appears that the situation will last at least that long. # The Nunavut Intergovernmental Affairs hopes that they will "come to # their senses", but the locals evidently don't see any problem with # the current state of affairs. # From Michaela Rodrigue, writing in the # Nunatsiaq News (1999-11-19): # http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html # Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones, # central - or Nunavut time - for government offices, and eastern time # for municipal offices and schools.... Igloolik [was similar but then] # made the switch to central time on Saturday, Nov. 6. # From Paul Eggert (2000-10-02): # Matthews and Vincent (1998) say the following, but we lack histories # for these potential new Zones. # # The Canadian Forces station at Alert uses Eastern Time while the # handful of residents at the Eureka weather station [in the Central # zone] skip daylight savings. Baffin Island, which is crossed by the # Central, Eastern and Atlantic Time zones only uses Eastern Time. # Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of # Central Time and Southampton Island [in the Central zone] is not # required to use daylight savings. # From # Nunavut now has two time zones (2000-11-10): # The Nunavut government would allow its employees in Kugluktuk and # Cambridge Bay to operate on central time year-round, putting them # one hour behind the rest of Nunavut for six months during the winter. # At the end of October the two communities had rebelled against # Nunavut's unified time zone, refusing to shift to eastern time with # the rest of the territory for the winter. Cambridge Bay remained on # central time, while Kugluktuk, even farther west, reverted to # mountain time, which they had used before the advent of Nunavut's # unified time zone in 1999. # # From Rives McDow (2001-01-20), quoting the Nunavut government: # The preceding decision came into effect at midnight, Saturday Nov 4, 2000. # From Paul Eggert (2000-12-04): # Let's just keep track of the official times for now. # From Rives McDow (2001-03-07): # The premier of Nunavut has issued a ministerial statement advising # that effective 2001-04-01, the territory of Nunavut will revert # back to three time zones (mountain, central, and eastern). Of the # cities in Nunavut, Coral Harbor is the only one that I know of that # has said it will not observe dst, staying on EST year round. I'm # checking for more info, and will get back to you if I come up with # more. # [Also see (2001-03-09).] # From Gwillim Law (2005-05-21): # According to ... # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp # (from a 1998 Canadian Geographic article), the de facto and de jure time # for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year # round. Using Google, it's easy to find other websites that confirm this. # I wasn't able to find how far back this time regimen goes, but since it # predates the creation of Nunavut, it probably goes back many years.... # The Inuktitut name of Coral Harbour is Sallit, but it's rarely used. # # From Paul Eggert (2014-10-17): # For lack of better information, assume that Southampton Island observed # daylight saving only during wartime. Gwillim Law's email also # mentioned maps now maintained by National Research Council Canada; # see above for an up-to-date link. # From Chris Walton (2007-03-01): # ... the community of Resolute (located on Cornwallis Island in # Nunavut) moved from Central Time to Eastern Time last November. # Basically the community did not change its clocks at the end of # daylight saving.... # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html # From Chris Walton (2011-03-21): # Back in 2007 I initiated the creation of a new "zone file" for Resolute # Bay. Resolute Bay is a small community located about 900km north of # the Arctic Circle. The zone file was required because Resolute Bay had # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007. # # According to new information which I received last week, Resolute Bay # went back to using UTC-6 in the winter of 2007-2008... # # On March 11/2007 most of Canada went onto daylight saving. On March # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I # talked to somebody that was both knowledgeable and helpful. I was able # to confirm that Resolute Bay was still operating on UTC-5. It was # explained to me that Resolute Bay had been on the Eastern Time zone # (EST) in the winter, and was now back on the Central Time zone (CDT). # i.e. the time zone had changed twice in the last year but the clocks # had not moved. The residents had to know which time zone they were in # so they could follow the correct TV schedule... # # On Nov 02/2008 most of Canada went onto standard time. On Nov 03/2008 I # phoned the Resolute Bay hamlet office...[D]ue to the challenging nature # of the phone call, I decided to seek out an alternate source of # information. I found an e-mail address for somebody by the name of # Stephanie Adams whose job was listed as "Inns North Support Officer for # Arctic Co-operatives." I was under the impression that Stephanie lived # and worked in Resolute Bay... # # On March 14/2011 I phoned the hamlet office again. I was told that # Resolute Bay had been using Central Standard Time over the winter of # 2010-2011 and that the clocks had therefore been moved one hour ahead # on March 13/2011. The person I talked to was aware that Resolute Bay # had previously experimented with Eastern Standard Time but he could not # tell me when the practice had stopped. # # On March 17/2011 I searched the Web to find an e-mail address of # somebody that might be able to tell me exactly when Resolute Bay went # off Eastern Standard Time. I stumbled on the name "Aziz Kheraj." Aziz # used to be the mayor of Resolute Bay and he apparently owns half the # businesses including "South Camp Inn." This website has some info on # Aziz: # http://www.uphere.ca/node/493 # # I sent Aziz an e-mail asking when Resolute Bay had stopped using # Eastern Standard Time. # # Aziz responded quickly with this: "hi, The time was not changed for the # 1 year only, the following year, the community went back to the old way # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in # the winter Zulu plus 6 hrs" # # This of course conflicted with everything I had ascertained in November 2008. # # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You # may want to check with the weather office in Resolute Bay or do a # search on the weather through Env. Canada. web site" # # If I had realized the Stephanie did not live in Resolute Bay I would # never have contacted her. I now believe that all the information I # obtained in November 2008 should be ignored... # I apologize for reporting incorrect information in 2008. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S Rule NT_YK 1919 only - May 25 2:00 1:00 D Rule NT_YK 1919 only - Nov 1 0:00 0 S Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace Rule NT_YK 1945 only - Sep 30 2:00 0 S Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD Rule NT_YK 1965 only - Oct lastSun 2:00 0 S Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] # aka Panniqtuuq Zone America/Pangnirtung 0 - zzz 1921 # trading post est. -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00 -5:00 Canada E%sT 1999 Oct 31 2:00 -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 Canada E%sT # formerly Frobisher Bay Zone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est. -5:00 NT_YK E%sT 1999 Oct 31 2:00 -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 Canada E%sT # aka Qausuittuq Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 -5:00 - EST 2001 Apr 1 3:00 -6:00 Canada C%sT 2006 Oct 29 2:00 -5:00 - EST 2007 Mar 11 3:00 -6:00 Canada C%sT # aka Kangiqiniq Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded -6:00 NT_YK C%sT 2000 Oct 29 2:00 -5:00 - EST 2001 Apr 1 3:00 -6:00 Canada C%sT # aka Iqaluktuuttiaq Zone America/Cambridge_Bay 0 - zzz 1920 # trading post est.? -7:00 NT_YK M%sT 1999 Oct 31 2:00 -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 - EST 2000 Nov 5 0:00 -6:00 - CST 2001 Apr 1 3:00 -7:00 Canada M%sT Zone America/Yellowknife 0 - zzz 1935 # Yellowknife founded? -7:00 NT_YK M%sT 1980 -7:00 Canada M%sT Zone America/Inuvik 0 - zzz 1953 # Inuvik founded -8:00 NT_YK P%sT 1979 Apr lastSun 2:00 -7:00 NT_YK M%sT 1980 -7:00 Canada M%sT Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1966 Jul 1 2:00 -8:00 NT_YK P%sT 1980 -8:00 Canada P%sT Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1973 Oct 28 0:00 -8:00 NT_YK P%sT 1980 -8:00 Canada P%sT ############################################################################### # Mexico # From Paul Eggert (2014-12-07): # The Investigation and Analysis Service of the # Mexican Library of Congress (MLoC) has published a # history of Mexican local time (in Spanish) # http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm # # Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC. # (In all cases we go with the MLoC.) # S&P report that Baja was at -8:00 in 1922/1923. # S&P say the 1930 transition in Baja was 1930-11-16. # S&P report no DST during summer 1931. # S&P report a transition at 1932-03-30 23:00, not 1932-04-01. # From Gwillim Law (2001-02-20): # There are some other discrepancies between the Decrees page and the # tz database. I think they can best be explained by supposing that # the researchers who prepared the Decrees page failed to find some of # the relevant documents. # From Alan Perry (1996-02-15): # A guy from our Mexico subsidiary finally found the Presidential Decree # outlining the timezone changes in Mexico. # # ------------- Begin Forwarded Message ------------- # # I finally got my hands on the Official Presidential Decree that sets up the # rules for the DST changes. The rules are: # # 1. The country is divided in 3 timezones: # - Baja California Norte (the Mexico/BajaNorte TZ) # - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ) # - The rest of the country (the Mexico/General TZ) # # 2. From the first Sunday in April at 2:00 AM to the last Sunday in October # at 2:00 AM, the times in each zone are as follows: # BajaNorte: GMT+7 # BajaSur: GMT+6 # General: GMT+5 # # 3. The rest of the year, the times are as follows: # BajaNorte: GMT+8 # BajaSur: GMT+7 # General: GMT+6 # # The Decree was published in Mexico's Official Newspaper on January 4th. # # -------------- End Forwarded Message -------------- # From Paul Eggert (1996-06-12): # For an English translation of the decree, see # "Diario Oficial: Time Zone Changeover" (1996-01-04). # http://mexico-travel.com/extra/timezone_eng.html # From Rives McDow (1998-10-08): # The State of Quintana Roo has reverted back to central STD and DST times # (i.e. UTC -0600 and -0500 as of 1998-08-02). # From Rives McDow (2000-01-10): # Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time # zone 5 hours from the International Date Line, and will not observe daylight # savings time so as to stay on the same time zone as the southern part of # Arizona year round. # From Jesper Nørgaard, translating # (2001-01-17): # In Oaxaca, the 55.000 teachers from the Section 22 of the National # Syndicate of Education Workers, refuse to apply daylight saving each # year, so that the more than 10,000 schools work at normal hour the # whole year. # From Gwillim Law (2001-01-19): # ... says # (translated):... # January 17, 2000 - The Energy Secretary, Ernesto Martens, announced # that Summer Time will be reduced from seven to five months, starting # this year.... # http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001 # [translated], says "summer time will ... take effect on the first Sunday # in May, and end on the last Sunday of September. # From Arthur David Olson (2001-01-25): # The 2001-01-24 traditional Washington Post contained the page one # story "Timely Issue Divides Mexicans."... # http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html # ... Mexico City Mayor López Obrador "...is threatening to keep # Mexico City and its 20 million residents on a different time than # the rest of the country..." In particular, López Obrador would abolish # observation of Daylight Saving Time. # Official statute published by the Energy Department # http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre # (2001-02-01) shows Baja and Chihauhua as still using US DST rules, # and Sonora with no DST. This was reported by Jesper Nørgaard (2001-02-03). # From Paul Eggert (2001-03-03): # # http://www.latimes.com/news/nation/20010303/t000018766.html # James F. Smith writes in today's LA Times # * Sonora will continue to observe standard time. # * Last week Mexico City's mayor Andrés Manuel López Obrador decreed that # the Federal District will not adopt DST. # * 4 of 16 district leaders announced they'll ignore the decree. # * The decree does not affect federal-controlled facilities including # the airport, banks, hospitals, and schools. # # For now we'll assume that the Federal District will bow to federal rules. # From Jesper Nørgaard (2001-04-01): # I found some references to the Mexican application of daylight # saving, which modifies what I had already sent you, stating earlier # that a number of northern Mexican states would go on daylight # saving. The modification reverts this to only cover Baja California # (Norte), while all other states (except Sonora, who has no daylight # saving all year) will follow the original decree of president # Vicente Fox, starting daylight saving May 6, 2001 and ending # September 30, 2001. # References: "Diario de Monterrey" # Palabra (2001-03-31) # From Reuters (2001-09-04): # Mexico's Supreme Court on Tuesday declared that daylight savings was # unconstitutional in Mexico City, creating the possibility the # capital will be in a different time zone from the rest of the nation # next year.... The Supreme Court's ruling takes effect at 2:00 # a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to # standard time. "This is so residents of the Federal District are not # subject to unexpected time changes," a statement from the court said. # From Jesper Nørgaard Welen (2002-03-12): # ... consulting my local grocery store(!) and my coworkers, they all insisted # that a new decision had been made to reinstate US style DST in Mexico.... # http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20) # confirms this. Sonora as usual is the only state where DST is not applied. # From Steffen Thorsen (2009-12-28): # # Steffen Thorsen wrote: # > Mexico's House of Representatives has approved a proposal for northern # > Mexico's border cities to share the same daylight saving schedule as # > the United States. # Now this has passed both the Congress and the Senate, so starting from # 2010, some border regions will be the same: # http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides-border/ # http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario_de_frontera_con_eu/621939 # (Spanish) # # Could not find the new law text, but the proposed law text changes are here: # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf # (Gaceta Parlamentaria) # # There is also a list of the votes here: # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html # # Our page: # http://www.timeanddate.com/news/time/north-mexico-dst-change.html # From Arthur David Olson (2010-01-20): # The page # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 # includes this text: # En los municipios fronterizos de Tijuana y Mexicali en Baja California; # Juárez y Ojinaga en Chihuahua; Acuña y Piedras Negras en Coahuila; # Anáhuac en Nuevo León; y Nuevo Laredo, Reynosa y Matamoros en # Tamaulipas, la aplicación de este horario estacional surtirá efecto # desde las dos horas del segundo domingo de marzo y concluirá a las dos # horas del primer domingo de noviembre. # En los municipios fronterizos que se encuentren ubicados en la franja # fronteriza norte en el territorio comprendido entre la línea # internacional y la línea paralela ubicada a una distancia de veinte # kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el # interior del país, la aplicación de este horario estacional surtirá # efecto desde las dos horas del segundo domingo de marzo y concluirá a # las dos horas del primer domingo de noviembre. # From Steffen Thorsen (2014-12-08), translated by Gwillim Law: # The Mexican state of Quintana Roo will likely change to EST in 2015. # # http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo # "With this change, the time conflict that has existed between the municipios # of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an # end. The latter declared itself in rebellion 15 years ago when a time change # was initiated in Mexico, and since then it has refused to change its time # zone along with the rest of the country." # # From Steffen Thorsen (2015-01-14), translated by Gwillim Law: # http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html # "...the new time zone will come into effect at two o'clock on the first Sunday # of February, when we will have to advance the clock one hour from its current # time..." # Also, the new zone will not use DST. # # From Carlos Raúl Perasso (2015-02-02): # The decree that modifies the Mexican Hour System Law has finally # been published at the Diario Oficial de la Federación # http://www.dof.gob.mx/nota_detalle.php?codigo=5380123&fecha=31/01/2015 # It establishes 5 zones for Mexico: # 1- Zona Centro (Central Zone): Corresponds to longitude 90 W, # includes most of Mexico, excluding what's mentioned below. # 2- Zona Pacífico (Pacific Zone): Longitude 105 W, includes the # states of Baja California Sur; Chihuahua; Nayarit (excluding Bahía # de Banderas which lies in Central Zone); Sinaloa and Sonora. # 3- Zona Noroeste (Northwest Zone): Longitude 120 W, includes the # state of Baja California. # 4- Zona Sureste (Southeast Zone): Longitude 75 W, includes the state # of Quintana Roo. # 5- The islands, reefs and keys shall take their timezone from the # longitude they are located at. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mexico 1939 only - Feb 5 0:00 1:00 D Rule Mexico 1939 only - Jun 25 0:00 0 S Rule Mexico 1940 only - Dec 9 0:00 1:00 D Rule Mexico 1941 only - Apr 1 0:00 0 S Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War Rule Mexico 1944 only - May 1 0:00 0 S Rule Mexico 1950 only - Feb 12 0:00 1:00 D Rule Mexico 1950 only - Jul 30 0:00 0 S Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D Rule Mexico 2001 only - Sep lastSun 2:00 0 S Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 2002 max - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # Quintana Roo; represented by Cancún Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 -5:00 Mexico E%sT 1998 Aug 2 2:00 -6:00 Mexico C%sT 2015 Feb 1 2:00 -5:00 - EST # Campeche, Yucatán; represented by Mérida Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32 -6:00 - CST 1981 Dec 23 -5:00 - EST 1982 Dec 2 -6:00 Mexico C%sT # Coahuila, Durango, Nuevo León, Tamaulipas (near US border) Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT 2010 -6:00 US C%sT # Coahuila, Durango, Nuevo León, Tamaulipas (away from US border) Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44 -6:00 - CST 1988 -6:00 US C%sT 1989 -6:00 Mexico C%sT # Central Mexico Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 Mexico C%sT 2001 Sep 30 2:00 -6:00 - CST 2002 Feb 20 -6:00 Mexico C%sT # Chihuahua (near US border) Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT 2010 -7:00 US M%sT # Chihuahua (away from US border) Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT # Sonora Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 1999 -7:00 - MST # From Alexander Krivenyshev (2010-04-21): # According to news, Bahía de Banderas (Mexican state of Nayarit) # changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to # share the same time zone as nearby city Puerto Vallarta, Jalisco). # # (Spanish) # Bahía de Banderas homologa su horario al del centro del # país, a partir de este domingo # http://www.nayarit.gob.mx/notes.asp?id=20748 # # Bahía de Banderas homologa su horario con el del Centro del # País # http://www.bahiadebanderas.gob.mx/principal/index.php?option=com_content&view=article&id=261:bahia-de-banderas-homologa-su-horario-con-el-del-centro-del-pais&catid=42:comunicacion-social&Itemid=50 # # (English) # Puerto Vallarta and Bahía de Banderas: One Time Zone # http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-03-Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml # http://www.worldtimezone.com/dst_news/dst_news_mexico08.html # # "Mexico's Senate approved the amendments to the Mexican Schedule System that # will allow Bahía de Banderas and Puerto Vallarta to share the same time # zone ..." # Baja California Sur, Nayarit, Sinaloa # From Arthur David Olson (2010-05-01): # Use "Bahia_Banderas" to keep the name to fourteen characters. # Mazatlán Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT # Bahía de Banderas Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00 -7:00 - MST 1927 Jun 10 23:00 -6:00 - CST 1930 Nov 15 -7:00 - MST 1931 May 1 23:00 -6:00 - CST 1931 Oct -7:00 - MST 1932 Apr 1 -6:00 - CST 1942 Apr 24 -7:00 - MST 1949 Jan 14 -8:00 - PST 1970 -7:00 Mexico M%sT 2010 Apr 4 2:00 -6:00 Mexico C%sT # Baja California (near US border) Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Aug 14 23:00u -8:00 1:00 PPT 1945 Nov 12 # Peace -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT 2001 -8:00 US P%sT 2002 Feb 20 -8:00 Mexico P%sT 2010 -8:00 US P%sT # Baja California (away from US border) Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32 -7:00 - MST 1924 -8:00 - PST 1927 Jun 10 23:00 -7:00 - MST 1930 Nov 15 -8:00 - PST 1931 Apr 1 -8:00 1:00 PDT 1931 Sep 30 -8:00 - PST 1942 Apr 24 -8:00 1:00 PWT 1945 Aug 14 23:00u -8:00 1:00 PPT 1945 Nov 12 # Peace -8:00 - PST 1948 Apr 5 -8:00 1:00 PDT 1949 Jan 14 -8:00 - PST 1954 -8:00 CA P%sT 1961 -8:00 - PST 1976 -8:00 US P%sT 1996 -8:00 Mexico P%sT 2001 -8:00 US P%sT 2002 Feb 20 -8:00 Mexico P%sT # From Paul Eggert (2006-03-22): # Formerly there was an America/Ensenada zone, which differed from # America/Tijuana only in that it did not observe DST from 1976 # through 1995. This was as per Shanks (1999). But Shanks & Pottenger say # Ensenada did not observe DST from 1948 through 1975. Guy Harris reports # that the 1987 OAG says "Only Ensenada, Mexicali, San Felipe and # Tijuana observe DST," which agrees with Shanks & Pottenger but implies that # DST-observance was a town-by-town matter back then. This concerns # data after 1970 so most likely there should be at least one Zone # other than America/Tijuana for Baja, but it's not clear yet what its # name or contents should be. # # Revillagigedo Is # no information ############################################################################### # Anguilla # Antigua and Barbuda # See America/Port_of_Spain. # Bahamas # # For 1899 Milne gives -5:09:29.5; round that. # # From Sue Williams (2006-12-07): # The Bahamas announced about a month ago that they plan to change their DST # rules to sync with the U.S. starting in 2007.... # http://www.jonesbahamas.com/?c=45&a=10412 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Nassau -5:09:30 - LMT 1912 Mar 2 -5:00 Bahamas E%sT 1976 -5:00 US E%sT # Barbados # For 1899 Milne gives -3:58:29.2; round that. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Barb 1977 only - Jun 12 2:00 1:00 D Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D Rule Barb 1979 only - Sep 30 2:00 0 S Rule Barb 1980 only - Sep 25 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown -3:58:29 - BMT 1932 # Bridgetown Mean Time -4:00 Barb A%sT # Belize # Whitman entirely disagrees with Shanks; go with Shanks & Pottenger. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S Rule Belize 1973 only - Dec 5 0:00 1:00 D Rule Belize 1974 only - Feb 9 0:00 0 S Rule Belize 1982 only - Dec 18 0:00 1:00 D Rule Belize 1983 only - Feb 12 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Belize -5:52:48 - LMT 1912 Apr -6:00 Belize C%sT # Bermuda # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower, # Bermuda dockyard, Ireland I; round that. # From Dan Jones, reporting in The Royal Gazette (2006-06-26): # Next year, however, clocks in the US will go forward on the second Sunday # in March, until the first Sunday in November. And, after the Time Zone # (Seasonal Variation) Bill 2006 was passed in the House of Assembly on # Friday, the same thing will happen in Bermuda. # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135 # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton -4:00 - AST 1974 Apr 28 2:00 -4:00 Canada A%sT 1976 -4:00 US A%sT # Cayman Is # See America/Panama. # Costa Rica # Milne gives -5:36:13.3 as San José mean time; round to nearest. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D # IATA SSIM (1991-09) says the following was at 1:00; # go with Shanks & Pottenger. Rule CR 1991 only - Jul 1 0:00 0 S Rule CR 1992 only - Mar 15 0:00 0 S # There are too many San Josés elsewhere, so we'll use 'Costa Rica'. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time -6:00 CR C%sT # Coco # no information; probably like America/Costa_Rica # Cuba # From Paul Eggert (2013-02-21): # Milne gives -5:28:50.45 for the observatory at Havana, -5:29:23.57 # for the port, and -5:30 for meteorological observations. # For now, stick with Shanks & Pottenger. # From Arthur David Olson (1999-03-29): # The 1999-03-28 exhibition baseball game held in Havana, Cuba, between # the Cuban National Team and the Baltimore Orioles was carried live on # the Orioles Radio Network, including affiliate WTOP in Washington, DC. # During the game, play-by-play announcer Jim Hunter noted that # "We'll be losing two hours of sleep...Cuba switched to Daylight Saving # Time today." (The "two hour" remark referred to losing one hour of # sleep on 1999-03-28 - when the announcers were in Cuba as it switched # to DST - and one more hour on 1999-04-04 - when the announcers will have # returned to Baltimore, which switches on that date.) # From Steffen Thorsen (2013-11-11): # DST start in Cuba in 2004 ... does not follow the same rules as the # years before. The correct date should be Sunday 2004-03-28 00:00 ... # https://web.archive.org/web/20040402060750/http://www.granma.cu/espanol/2004/marzo/sab27/reloj.html # From Evert van der Veer via Steffen Thorsen (2004-10-28): # Cuba is not going back to standard time this year. # From Paul Eggert (2006-03-22): # http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html # says that it's due to a problem at the Antonio Guiteras # thermoelectric plant, and says "This October there will be no return # to normal hours (after daylight saving time)". # For now, let's assume that it's a temporary measure. # From Carlos A. Carnero Delgado (2005-11-12): # This year (just like in 2004-2005) there's no change in time zone # adjustment in Cuba. We will stay in daylight saving time: # http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html # From Jesper Nørgaard Welen (2006-10-21): # An article in GRANMA INTERNACIONAL claims that Cuba will end # the 3 years of permanent DST next weekend, see # http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html # "On Saturday night, October 28 going into Sunday, October 29, at 01:00, # watches should be set back one hour - going back to 00:00 hours - returning # to the normal schedule.... # From Paul Eggert (2007-03-02): # , dated yesterday, # says Cuban clocks will advance at midnight on March 10. # For lack of better information, assume Cuba will use US rules, # except that it switches at midnight standard time as usual. # # From Steffen Thorsen (2007-10-25): # Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week # earlier - on the last Sunday of October, just like in 2006. # # He supplied these references: # # http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm # # From Alex Krivenyshev (2007-10-25): # Here is also article from Granma (Cuba): # # Regirá el Horario Normal desde el próximo domingo 28 de octubre # http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html # # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html # From Arthur David Olson (2008-03-09): # I'm in Maryland which is now observing United States Eastern Daylight # Time. At 9:44 local time I used RealPlayer to listen to # http://media.enet.cu/radioreloj # a Cuban information station, and heard # the time announced as "ocho cuarenta y cuatro" ("eight forty-four"), # indicating that Cuba is still on standard time. # From Steffen Thorsen (2008-03-12): # It seems that Cuba will start DST on Sunday, 2007-03-16... # It was announced yesterday, according to this source (in Spanish): # http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm # # Some more background information is posted here: # http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html # # The article also says that Cuba has been observing DST since 1963, # while Shanks (and tzdata) has 1965 as the first date (except in the # 1940's). Many other web pages in Cuba also claim that it has been # observed since 1963, but with the exception of 1970 - an exception # which is not present in tzdata/Shanks. So there is a chance we need to # change some historic records as well. # # One example: # http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm # From Jesper Nørgaard Welen (2008-03-13): # The Cuban time change has just been confirmed on the most authoritative # web site, the Granma. Please check out # http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html # # Basically as expected after Steffen Thorsen's information, the change # will take place midnight between Saturday and Sunday. # From Arthur David Olson (2008-03-12): # Assume Sun>=15 (third Sunday) going forward. # From Alexander Krivenyshev (2009-03-04) # According to the Radio Reloj - Cuba will start Daylight Saving Time on # midnight between Saturday, March 07, 2009 and Sunday, March 08, 2009- # not on midnight March 14 / March 15 as previously thought. # # http://www.worldtimezone.com/dst_news/dst_news_cuba05.html # (in Spanish) # From Arthur David Olson (2009-03-09) # I listened over the Internet to # http://media.enet.cu/readioreloj # this morning; when it was 10:05 a. m. here in Bethesda, Maryland the # the time was announced as "diez cinco" - the same time as here, indicating # that has indeed switched to DST. Assume second Sunday from 2009 forward. # From Steffen Thorsen (2011-03-08): # Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00 # this year. Nothing about the end date known so far (if that has # changed at all). # # Source: # http://granma.co.cu/2011/03/08/nacional/artic01.html # # Our info: # http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html # # From Steffen Thorsen (2011-10-30) # Cuba will end DST two weeks later this year. Instead of going back # tonight, it has been delayed to 2011-11-13 at 01:00. # # One source (Spanish) # http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html # # Our page: # http://www.timeanddate.com/news/time/cuba-time-changes-2011.html # # From Steffen Thorsen (2012-03-01) # According to Radio Reloj, Cuba will start DST on Midnight between March # 31 and April 1. # # Radio Reloj has the following info (Spanish): # http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril # # Our info on it: # http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html # From Steffen Thorsen (2012-11-03): # Radio Reloj and many other sources report that Cuba is changing back # to standard time on 2012-11-04: # http://www.radioreloj.cu/index.php/noticias-radio-reloj/36-nacionales/9961-regira-horario-normal-en-cuba-desde-el-domingo-cuatro-de-noviembre # From Paul Eggert (2012-11-03): # For now, assume the future rule is first Sunday in November. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D Rule Cuba 1928 only - Oct 10 0:00 0 S Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S Rule Cuba 1965 only - Jun 1 0:00 1:00 D Rule Cuba 1965 only - Sep 30 0:00 0 S Rule Cuba 1966 only - May 29 0:00 1:00 D Rule Cuba 1966 only - Oct 2 0:00 0 S Rule Cuba 1967 only - Apr 8 0:00 1:00 D Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S Rule Cuba 1968 only - Apr 14 0:00 1:00 D Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S Rule Cuba 1972 1974 - Oct 8 0:00 0 S Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S Rule Cuba 1978 only - May 7 0:00 1:00 D Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S Rule Cuba 1996 only - Oct 6 0:00s 0 S Rule Cuba 1997 only - Oct 12 0:00s 0 S Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S Rule Cuba 2000 2003 - Apr Sun>=1 0:00s 1:00 D Rule Cuba 2004 only - Mar lastSun 0:00s 1:00 D Rule Cuba 2006 2010 - Oct lastSun 0:00s 0 S Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D Rule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D Rule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D Rule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D Rule Cuba 2011 only - Nov 13 0:00s 0 S Rule Cuba 2012 only - Apr 1 0:00s 1:00 D Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT -5:00 Cuba C%sT # Dominica # See America/Port_of_Spain. # Dominican Republic # From Steffen Thorsen (2000-10-30): # Enrique Morales reported to me that the Dominican Republic has changed the # time zone to Eastern Standard Time as of Sunday 29 at 2 am.... # http://www.listin.com.do/antes/261000/republica/princi.html # From Paul Eggert (2000-12-04): # That URL (2000-10-26, in Spanish) says they planned to use US-style DST. # From Rives McDow (2000-12-01): # Dominican Republic changed its mind and presidential decree on Tuesday, # November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the # Dominican Republic will be reverting to 8 hours from the International Date # Line, and will not be using DST in the foreseeable future. The reason they # decided to use DST was to be in synch with Puerto Rico, who was also going # to implement DST. When Puerto Rico didn't implement DST, the president # decided to revert. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule DR 1966 only - Oct 30 0:00 1:00 D Rule DR 1967 only - Feb 28 0:00 0 S Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD Rule DR 1970 only - Feb 21 0:00 0 S Rule DR 1971 only - Jan 20 0:00 0 S Rule DR 1972 1974 - Jan 21 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Santo_Domingo -4:39:36 - LMT 1890 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT -5:00 DR E%sT 1974 Oct 27 -4:00 - AST 2000 Oct 29 2:00 -5:00 US E%sT 2000 Dec 3 1:00 -4:00 - AST # El Salvador # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D Rule Salv 1987 1988 - Sep lastSun 0:00 0 S # There are too many San Salvadors elsewhere, so use America/El_Salvador # instead of America/San_Salvador. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador -6:00 Salv C%sT # Grenada # Guadeloupe # St Barthélemy # St Martin (French part) # See America/Port_of_Spain. # Guatemala # # From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen: # Diario Co Latino, at # , # says in an article dated 2006-04-19 that the Guatemalan government had # decided on that date to advance official time by 60 minutes, to lessen the # impact of the elevated cost of oil.... Daylight saving time will last from # 2006-04-29 24:00 (Guatemalan standard time) to 2006-09-30 (time unspecified). # From Paul Eggert (2006-06-22): # The Ministry of Energy and Mines, press release CP-15/2006 # (2006-04-19), says DST ends at 24:00. See # http://www.sieca.org.gt/Sitio_publico/Energeticos/Doc/Medidas/Cambio_Horario_Nac_190406.pdf # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Guat 1973 only - Nov 25 0:00 1:00 D Rule Guat 1974 only - Feb 24 0:00 0 S Rule Guat 1983 only - May 21 0:00 1:00 D Rule Guat 1983 only - Sep 22 0:00 0 S Rule Guat 1991 only - Mar 23 0:00 1:00 D Rule Guat 1991 only - Sep 7 0:00 0 S Rule Guat 2006 only - Apr 30 0:00 1:00 D Rule Guat 2006 only - Oct 1 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 -6:00 Guat C%sT # Haiti # From Gwillim Law (2005-04-15): # Risto O. Nykänen wrote me that Haiti is now on DST. # I searched for confirmation, and I found a press release # on the Web page of the Haitian Consulate in Chicago (2005-03-31), # . Translated from French, it says: # # "The Prime Minister's Communication Office notifies the public in general # and the press in particular that, following a decision of the Interior # Ministry and the Territorial Collectivities [I suppose that means the # provinces], Haiti will move to Eastern Daylight Time in the night from next # Saturday the 2nd to Sunday the 3rd. # # "Consequently, the Prime Minister's Communication Office wishes to inform # the population that the country's clocks will be set forward one hour # starting at midnight. This provision will hold until the last Saturday in # October 2005. # # "Port-au-Prince, March 31, 2005" # # From Steffen Thorsen (2006-04-04): # I have been informed by users that Haiti observes DST this year like # last year, so the current "only" rule for 2005 might be changed to a # "max" rule or to last until 2006. (Who knows if they will observe DST # next year or if they will extend their DST like US/Canada next year). # # I have found this article about it (in French): # http://www.haitipressnetwork.com/news.cfm?articleID=7612 # # The reason seems to be an energy crisis. # From Stephen Colebourne (2007-02-22): # Some IATA info: Haiti won't be having DST in 2007. # From Steffen Thorsen (2012-03-11): # According to several news sources, Haiti will observe DST this year, # apparently using the same start and end date as USA/Canada. # So this means they have already changed their time. # # http://www.alterpresse.org/spip.php?article12510 # http://radiovision2000haiti.net/home/?p=13253 # # From Arthur David Olson (2012-03-11): # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to # 3:00 a.m. rather than the traditional Haitian jump at midnight. # Assume a US-style fall back as well. # From Steffen Thorsen (2013-03-10): # It appears that Haiti is observing DST this year as well, same rules # as US/Canada. They did it last year as well, and it looks like they # are going to observe DST every year now... # # http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/ # http://www.canalplushaiti.net/?p=6714 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Haiti 1983 only - May 8 0:00 1:00 D Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S # Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. # Go with IATA. Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S Rule Haiti 2012 max - Mar Sun>=8 2:00 1:00 D Rule Haiti 2012 max - Nov Sun>=1 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Port-au-Prince -4:49:20 - LMT 1890 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT -5:00 Haiti E%sT # Honduras # Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1. # From Paul Eggert (2006-05-05): # worldtimezone.com reports a 2006-05-02 Spanish-language AP article # saying Honduras will start using DST midnight Saturday, effective 4 # months until September. La Tribuna reported today # that Manuel Zelaya, the president # of Honduras, refused to back down on this. # From Jesper Nørgaard Welen (2006-08-08): # It seems that Honduras has returned from DST to standard time this Monday at # 00:00 hours (prolonging Sunday to 25 hours duration). # http://www.worldtimezone.com/dst_news/dst_news_honduras04.html # From Paul Eggert (2006-08-08): # Also see Diario El Heraldo, The country returns to standard time (2006-08-08). # http://www.elheraldo.hn/nota.php?nid=54941&sec=12 # It mentions executive decree 18-2006. # From Steffen Thorsen (2006-08-17): # Honduras will observe DST from 2007 to 2009, exact dates are not # published, I have located this authoritative source: # http://www.presidencia.gob.hn/noticia.aspx?nId=47 # From Steffen Thorsen (2007-03-30): # http://www.laprensahn.com/pais_nota.php?id04962=7386 # So it seems that Honduras will not enter DST this year.... # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D Rule Hond 1987 1988 - Sep lastSun 0:00 0 S Rule Hond 2006 only - May Sun>=1 0:00 1:00 D Rule Hond 2006 only - Aug Mon>=1 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr -6:00 Hond C%sT # # Great Swan I ceded by US to Honduras in 1972 # Jamaica # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an # unspecified official document, and says "This time is used throughout the # island". Go with Milne. Round to the nearest second as required by zic. # # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but # Lance Neita writes that Prime Minister Michael Manley decreed it January 5. # Assume Neita meant Jan 6 02:00, the same as the US. Neita also writes that # Manley's supporters associated this act with Manley's nickname "Joshua" # (recall that in the Bible the sun stood still at Joshua's request), # and with the Rod of Correction which Manley said he had received from # Haile Selassie, Emperor of Ethiopia. See: # Neita L. The politician in all of us. Jamaica Observer 2014-09-20 # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647 # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston -5:07:11 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1974 -5:00 US E%sT 1984 -5:00 - EST # Martinique # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France -4:04:20 - FFMT 1911 May # Fort-de-France MT -4:00 - AST 1980 Apr 6 -4:00 1:00 ADT 1980 Sep 28 -4:00 - AST # Montserrat # See America/Port_of_Spain. # Nicaragua # # This uses Shanks & Pottenger for times before 2005. # # From Steffen Thorsen (2005-04-12): # I've got reports from 8 different people that Nicaragua just started # DST on Sunday 2005-04-10, in order to save energy because of # expensive petroleum. The exact end date for DST is not yet # announced, only "September" but some sites also say "mid-September". # Some background information is available on the President's official site: # http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm # The Decree, no 23-2005 is available here: # http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2005/Decreto%2023-2005%20Se%20adelanta%20en%20una%20hora%20en%20todo%20el%20territorio%20nacional%20apartir%20de%20las%2024horas%20del%2009%20de%20Abril.pdf # # From Paul Eggert (2005-05-01): # The decree doesn't say anything about daylight saving, but for now let's # assume that it is daylight saving.... # # From Gwillim Law (2005-04-21): # The Associated Press story on the time change, which can be found at # http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html # and elsewhere, says (fifth paragraph, translated from Spanish): "The last # time that a change of clocks was applied to save energy was in the year 2000 # during the Arnoldo Alemán administration."... # The northamerica file says that Nicaragua has been on UTC-6 continuously # since December 1998. I wasn't able to find any details of Nicaraguan time # changes in 2000. Perhaps a note could be added to the northamerica file, to # the effect that we have indirect evidence that DST was observed in 2000. # # From Jesper Nørgaard Welen (2005-11-02): # Nicaragua left DST the 2005-10-02 at 00:00 (local time). # http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm # (2005-09-26) # # From Jesper Nørgaard Welen (2006-05-05): # http://www.elnuevodiario.com.ni/2006/05/01/nacionales/18410 # (my informal translation) # By order of the president of the republic, Enrique Bolaños, Nicaragua # advanced by sixty minutes their official time, yesterday at 2 in the # morning, and will stay that way until 30th of September. # # From Jesper Nørgaard Welen (2006-09-30): # http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2006/D-063-2006P-PRN-Cambio-Hora.pdf # My informal translation runs: # The natural sun time is restored in all the national territory, in that the # time is returned one hour at 01:00 am of October 1 of 2006. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S Rule Nic 2005 only - Apr 10 0:00 1:00 D Rule Nic 2005 only - Oct Sun>=1 0:00 0 S Rule Nic 2006 only - Apr 30 2:00 1:00 D Rule Nic 2006 only - Oct Sun>=1 1:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Managua -5:45:08 - LMT 1890 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? -6:00 - CST 1973 May -5:00 - EST 1975 Feb 16 -6:00 Nic C%sT 1992 Jan 1 4:00 -5:00 - EST 1992 Sep 24 -6:00 - CST 1993 -5:00 - EST 1997 -6:00 Nic C%sT # Panama # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Panama -5:18:08 - LMT 1890 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time -5:00 - EST Link America/Panama America/Cayman # Puerto Rico # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan -4:00 - AST 1942 May 3 -4:00 US A%sT 1946 -4:00 - AST # St Kitts-Nevis # St Lucia # See America/Port_of_Spain. # St Pierre and Miquelon # There are too many St Pierres elsewhere, so we'll use 'Miquelon'. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre -4:00 - AST 1980 May -3:00 - PMST 1987 # Pierre & Miquelon Time -3:00 Canada PM%sT # St Vincent and the Grenadines # See America/Port_of_Spain. # Turks and Caicos # # From Chris Dunn in # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007 # (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the # daylight saving dates for time changes have been adjusted to match # the recent U.S. change of dates. # # From Brian Inglis (2007-04-28): # http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26] # there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three # rows before that there is an out of date entry for Oct: # "Eastern Standard Times Begins 2007 # Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time" # indicating that the normal ET rules are followed. # # From Paul Eggert (2014-08-19): # The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See: # http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm # Model this as a switch from EST/EDT to AST ... # From Chris Walton (2014-11-04): # ... the TCI government appears to have delayed the switch to # "permanent daylight saving time" by one year.... # http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Grand_Turk -4:44:32 - LMT 1890 -5:07:11 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1979 -5:00 US E%sT 2015 Nov Sun>=1 2:00 -4:00 - AST # British Virgin Is # Virgin Is # See America/Port_of_Spain. # Local Variables: # coding: utf-8 # End: Index: stable/6/share/zoneinfo/southamerica =================================================================== --- stable/6/share/zoneinfo/southamerica (revision 283046) +++ stable/6/share/zoneinfo/southamerica (revision 283047) @@ -1,1713 +1,1739 @@ # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # This file is by no means authoritative; if you think you know better, # go ahead and edit the file (and please send any changes to # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. # From Paul Eggert (2014-10-31): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), # San Diego: ACS Publications, Inc. (2003). # Unfortunately this book contains many errors and cites no sources. # # Gwillim Law writes that a good source # for recent time zone data is the International Air Transport # Association's Standard Schedules Information Manual (IATA SSIM), # published semiannually. Law sent in several helpful summaries # of the IATA's data after 1990. Except where otherwise noted, # IATA SSIM is the source for entries after 1990. # # For data circa 1899, a common source is: # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. # http://www.jstor.org/stable/1774359 # # Earlier editions of these tables used the North American style (e.g. ARST and # ARDT for Argentine Standard and Daylight Time), but the following quote # suggests that it's better to use European style (e.g. ART and ARST). # I suggest the use of _Summer time_ instead of the more cumbersome # _daylight-saving time_. _Summer time_ seems to be in general use # in Europe and South America. # -- E O Cutler, _New York Times_ (1937-02-14), quoted in # H L Mencken, _The American Language: Supplement I_ (1960), p 466 # # Earlier editions of these tables also used the North American style # for time zones in Brazil, but this was incorrect, as Brazilians say # "summer time". Reinaldo Goulart, a São Paulo businessman active in # the railroad sector, writes (1999-07-06): # The subject of time zones is currently a matter of discussion/debate in # Brazil. Let's say that "the Brasília time" is considered the # "official time" because Brasília is the capital city. # The other three time zones are called "Brasília time "minus one" or # "plus one" or "plus two". As far as I know there is no such # name/designation as "Eastern Time" or "Central Time". # So I invented the following (English-language) abbreviations for now. # Corrections are welcome! # std dst # -2:00 FNT FNST Fernando de Noronha # -3:00 BRT BRST Brasília # -4:00 AMT AMST Amazon # -5:00 ACT ACST Acre ############################################################################### ############################################################################### # Argentina # From Bob Devine (1988-01-28): # Argentina: first Sunday in October to first Sunday in April since 1976. # Double Summer time from 1969 to 1974. Switches at midnight. # From U. S. Naval Observatory (1988-01-19): # ARGENTINA 3 H BEHIND UTC # From Hernan G. Otero (1995-06-26): # I am sending modifications to the Argentine time zone table... # AR was chosen because they are the ISO letters that represent Argentina. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Arg 1930 only - Dec 1 0:00 1:00 S Rule Arg 1931 only - Apr 1 0:00 0 - Rule Arg 1931 only - Oct 15 0:00 1:00 S Rule Arg 1932 1940 - Mar 1 0:00 0 - Rule Arg 1932 1939 - Nov 1 0:00 1:00 S Rule Arg 1940 only - Jul 1 0:00 1:00 S Rule Arg 1941 only - Jun 15 0:00 0 - Rule Arg 1941 only - Oct 15 0:00 1:00 S Rule Arg 1943 only - Aug 1 0:00 0 - Rule Arg 1943 only - Oct 15 0:00 1:00 S Rule Arg 1946 only - Mar 1 0:00 0 - Rule Arg 1946 only - Oct 1 0:00 1:00 S Rule Arg 1963 only - Oct 1 0:00 0 - Rule Arg 1963 only - Dec 15 0:00 1:00 S Rule Arg 1964 1966 - Mar 1 0:00 0 - Rule Arg 1964 1966 - Oct 15 0:00 1:00 S Rule Arg 1967 only - Apr 2 0:00 0 - Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - Rule Arg 1974 only - Jan 23 0:00 1:00 S Rule Arg 1974 only - May 1 0:00 0 - Rule Arg 1988 only - Dec 1 0:00 1:00 S # # From Hernan G. Otero (1995-06-26): # These corrections were contributed by InterSoft Argentina S.A., # obtaining the data from the: # Talleres de Hidrografía Naval Argentina # (Argentine Naval Hydrography Institute) Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S # # From Hernan G. Otero (1995-06-26): # From this moment on, the law that mandated the daylight saving # time corrections was derogated and no more modifications # to the time zones (for daylight saving) are now made. # # From Rives McDow (2000-01-10): # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, # which did not result in the switch of a time zone, as they stayed 9 hours # from the International Date Line. Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S # From Paul Eggert (2007-12-28): # DST was set to expire on March 5, not March 3, but since it was converted # to standard time on March 3 it's more convenient for us to pretend that # it ended on March 3. Rule Arg 2000 only - Mar 3 0:00 0 - # # From Peter Gradelski via Steffen Thorsen (2000-03-01): # We just checked with our São Paulo office and they say the government of # Argentina decided not to become one of the countries that go on or off DST. # So Buenos Aires should be -3 hours from GMT at all times. # # From Fabián L. Arce Jofré (2000-04-04): # The law that claimed DST for Argentina was derogated by President Fernando # de la Rúa on March 2, 2000, because it would make people spend more energy # in the winter time, rather than less. The change took effect on March 3. # # From Mariano Absatz (2001-06-06): # one of the major newspapers here in Argentina said that the 1999 # Timezone Law (which never was effectively applied) will (would?) be # in effect.... The article is at # http://ar.clarin.com/diario/2001-06-06/e-01701.htm # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted # 1999-09-17, and published 1999-09-21. The official publication is at: # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF # Regretfully, you have to subscribe (and pay) for the on-line version.... # # (2001-06-12): # the timezone for Argentina will not change next Sunday. # Apparently it will do so on Sunday 24th.... # http://ar.clarin.com/diario/2001-06-12/s-03501.htm # # (2001-06-25): # Last Friday (yes, the last working day before the date of the change), the # Senate annulled the 1999 law that introduced the changes later postponed. # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm # It remains the vote of the Deputies..., but it will be the same.... # This kind of things had always been done this way in Argentina. # We are still -03:00 all year round in all of the country. # # From Steffen Thorsen (2007-12-21): # A user (Leonardo Chaim) reported that Argentina will adopt DST.... # all of the country (all Zone-entries) are affected. News reports like # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate # that Argentina will use DST next year as well, from October to # March, although exact rules are not given. # # From Jesper Nørgaard Welen (2007-12-26) # The last hurdle of Argentina DST is over, the proposal was approved in # the lower chamber too (Diputados) with a vote 192 for and 2 against. # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to # the original scanned proposal, where the dates and the zero hours are # clear and unambiguous...This is the article about final approval: # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 # # From Paul Eggert (2007-12-22): # For dates after mid-2008, the following rules are my guesses and # are quite possibly wrong, but are more likely than no DST at all. # From Alexander Krivenyshev (2008-09-05): # As per message from Carlos Alberto Fonseca Arauz (Nicaragua), # Argentina will start DST on Sunday October 19, 2008. # # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) # From Rodrigo Severo (2008-10-06): # Here is some info available at a Gentoo bug related to TZ on Argentina's DST: # ... # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- # Hi, there is a problem with timezone-data-2008e and maybe with # timezone-data-2008f # Argentinian law [Number] 25.155 is no longer valid. # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm # The new one is law [Number] 26.350 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm # So there is no summer time in Argentina for now. # From Mariano Absatz (2008-10-20): # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST # in Argentina from 2008-10-19 until 2009-03-15. # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 # # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 # # Press release 235 dated Saturday October 18th, from the Government of the # Province of Jujuy saying it will not apply DST either (even when it was not # included in Decree 1705/2008). # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc # From fullinet (2009-10-18): # As announced in # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 # (an official .gob.ar) under title: "Sin Cambio de Hora" # (English: "No hour change"). # # "Por el momento, el Gobierno Nacional resolvió no modificar la hora # oficial, decisión que estaba en estudio para su implementación el # domingo 18 de octubre. Desde el Ministerio de Planificación se anunció # que la Argentina hoy, en estas condiciones meteorológicas, no necesita # la modificación del huso horario, ya que 2009 nos encuentra con # crecimiento en la producción y distribución energética." Rule Arg 2007 only - Dec 30 0:00 1:00 S Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S # From Mariano Absatz (2004-05-21): # Today it was officially published that the Province of Mendoza is changing # its timezone this winter... starting tomorrow night.... # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf # From Paul Eggert (2004-05-24): # It's Law No. 7,210. This change is due to a public power emergency, so for # now we'll assume it's for this year only. # # From Paul Eggert (2014-08-09): # Hora de verano para la República Argentina # http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html # says that standard time in Argentina from 1894-10-31 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value # over Shanks & Pottenger. # # From Mariano Absatz (2004-06-05): # These media articles from a major newspaper mostly cover the current state: # http://www.lanacion.com.ar/04/05/27/de_604825.asp # http://www.lanacion.com.ar/04/05/28/de_605203.asp # # The following eight (8) provinces pulled clocks back to UTC-04:00 at # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). # Apparently, all nine provinces would go back to UTC-03:00 at the same # time in October 17th. # # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, # Tierra del Fuego, Tucumán. # # From Mariano Absatz (2004-06-14): # ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's # annoyance with the change is much higher than the power savings obtained.... # # From Gwillim Law (2004-06-14): # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... # "The time change in Tierra del Fuego was a conflicted decision from # the start. The government had decreed that the measure would take # effect on June 1, but a normative error forced the new time to begin # three days earlier, from a Saturday to a Sunday.... # Our understanding was that the change was originally scheduled to take place # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other # provinces). Sunday was May 30, only two days earlier. So the article # contains a contradiction. I would give more credence to the Saturday/Sunday # date than the "three days earlier" phrase, and conclude that Tierra del # Fuego set its clocks back at 2004-05-30 00:00. # # From Steffen Thorsen (2004-10-05): # The previous law 7210 which changed the province of Mendoza's time zone # back in May have been modified slightly in a new law 7277, which set the # new end date to 2004-09-26 (original date was 2004-10-17). # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf # # From Mariano Absatz (2004-10-05): # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 # at midnight between Saturday, July 24th and Sunday, July 25th.... # http://www.sanjuan.gov.ar/prensa/archivo/000329.html # http://www.sanjuan.gov.ar/prensa/archivo/000426.html # http://www.sanjuan.gov.ar/prensa/archivo/000441.html # From Alex Krivenyshev (2008-01-17): # Here are articles that Argentina Province San Luis is planning to end DST # as earlier as upcoming Monday January 21, 2008 or February 2008: # # Provincia argentina retrasa reloj y marca diferencia con resto del país # (Argentine Province delayed clock and mark difference with the rest of the # country) # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel # # Es inminente que en San Luis atrasen una hora los relojes # (It is imminent in San Luis clocks one hour delay) # http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html # From Jesper Nørgaard Welen (2008-01-18): # The page of the San Luis provincial government # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 # confirms what Alex Krivenyshev has earlier sent to the tz # emailing list about that San Luis plans to return to standard # time much earlier than the rest of the country. It also # confirms that upon request the provinces San Juan and Mendoza # refused to follow San Luis in this change. # # The change is supposed to take place Monday the 21st at 0:00 # hours. As far as I understand it if this goes ahead, we need # a new timezone for San Luis (although there are also documented # independent changes in the southamerica file of San Luis in # 1990 and 1991 which has not been confirmed). # From Jesper Nørgaard Welen (2008-01-25): # Unfortunately the below page has become defunct, about the San Luis # time change. Perhaps because it now is part of a group of pages "Most # important pages of 2008." # # You can use # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 # instead it seems. Or use "Buscador" from the main page of the San Luis # government, and fill in "huso" and click OK, and you will get 3 pages # from which the first one is identical to the above. # From Mariano Absatz (2008-01-28): # I can confirm that the Province of San Luis (and so far only that # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back # 1 hour), and they intend to keep UTC-3 as their timezone all year round # (that is, unless they change their mind any minute now). # # So we'll have to add yet another city to 'southamerica' (I think San # Luis city is the mos populated city in the Province, so it'd be # America/Argentina/San_Luis... of course I can't remember if San Luis's # history of particular changes goes along with Mendoza or San Juan :-( # (I only remember not being able to collect hard facts about San Luis # back in 2004, when these provinces changed to UTC-4 for a few days, I # mailed them personally and never got an answer). # From Paul Eggert (2014-08-12): # Unless otherwise specified, data entries are from Shanks & Pottenger through # 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that # America/Cordoba split into 6 subregions during 1991/1992, one of which # was America/San_Luis, but we haven't verified this yet so for now we'll # keep America/Cordoba a single region rather than splitting it into the # other 5 subregions. # From Mariano Absatz (2009-03-13): # Yesterday (with our usual 2-day notice) the Province of San Luis # decided that next Sunday instead of "staying" @utc-03:00 they will go # to utc-04:00 until the second Saturday in October... # # The press release is at # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 # (I couldn't find the decree, but www.sanluis.gov.ar # is the official page for the Province Government.) # # There's also a note in only one of the major national papers ... # http://www.lanacion.com.ar/nota.asp?nota_id=1107912 # # The press release says [quick and dirty translation]: # ... announced that next Sunday, at 00:00, Puntanos (the San Luis # inhabitants) will have to turn back one hour their clocks # # Since then, San Luis will establish its own Province timezone. Thus, # during 2009, this timezone change will run from 00:00 the third Sunday # in March until 24:00 of the second Saturday in October. # From Mariano Absatz (2009-10-16): # ...the Province of San Luis is a case in itself. # # The Law at # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 # is ambiguous because establishes a calendar from the 2nd Sunday in # October at 0:00 thru the 2nd Saturday in March at 24:00 and the # complement of that starting on the 2nd Sunday of March at 0:00 and # ending on the 2nd Saturday of March at 24:00. # # This clearly breaks every time the 1st of March or October is a Sunday. # # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd # Sunday of October and March. # # The problem is that the changes in the rest of the Provinces that did # change in 2007/2008, were made according to the Federal Law and Decrees # that did so on the 3rd Sunday of October and March. # # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday # (October 11th) at 0:00. # # So I guess a new set of rules, besides "Arg", must be made and the last # America/Argentina/San_Luis entries should change to use these... # # I'm enclosing a patch that does what I say... regretfully, the San Luis # timezone must be called "WART/WARST" even when most of the time (like, # right now) WARST == ART... that is, since last Sunday, all the country # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest # of the country calls it "ART". # ... # From Alexander Krivenyshev (2010-04-09): # According to news reports from El Diario de la República Province San # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time # after April 11, 2010 - will continue to have same time as rest of # Argentina (UTC-3) (no DST). # # Confirmaron la prórroga del huso horario de verano (Spanish) # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 # or (some English translation): # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html # From Mariano Absatz (2010-04-12): # yes...I can confirm this...and given that San Luis keeps calling # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" # rules...San Luis is still using "Western ARgentina Time" and it got # stuck on Summer daylight savings time even though the summer is over. # From Paul Eggert (2013-09-05): # Perhaps San Luis operates on the legal fiction that it is at UTC-4 # with perpetual summer time, but ordinary usage typically seems to # just say it's at UTC-3; see, for example, # http://es.wikipedia.org/wiki/Hora_oficial_argentina # We've documented similar situations as being plain changes to # standard time, so let's do that here too. This does not change UTC # offsets, only tm_isdst and the time zone abbreviations. One minor # plus is that this silences a zic complaint that there's no POSIX TZ # setting for time stamps past 2038. # From Paul Eggert (2013-02-21): # Milne says Córdoba time was -4:16:48.2. Round to the nearest second. # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Buenos Aires (BA), Capital Federal (CF), Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May # Córdoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 Arg AR%sT # # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), # Chaco (CC), Formosa (FM), Santiago del Estero (SE) # # Shanks & Pottenger also make the following claims, which we haven't verified: # - Formosa switched to -3:00 on 1991-01-07. # - Misiones switched to -3:00 on 1990-12-29. # - Chaco switched to -3:00 on 1991-01-04. # - Santiago del Estero switched to -4:00 on 1991-04-01, # then to -3:00 on 1991-04-26. # Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 3 -4:00 - WART 1991 Oct 20 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 Arg AR%sT # # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 3 -4:00 - WART 1991 Oct 20 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # Tucumán (TM) Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 3 -4:00 - WART 1991 Oct 20 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 Jun 1 -4:00 - WART 2004 Jun 13 -3:00 Arg AR%sT # # La Rioja (LR) Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 1 -4:00 - WART 1991 May 7 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 Jun 1 -4:00 - WART 2004 Jun 20 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # San Juan (SJ) Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 1 -4:00 - WART 1991 May 7 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 May 31 -4:00 - WART 2004 Jul 25 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # Jujuy (JY) Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1990 Mar 4 -4:00 - WART 1990 Oct 28 -4:00 1:00 WARST 1991 Mar 17 -4:00 - WART 1991 Oct 6 -3:00 1:00 ARST 1992 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # Catamarca (CT), Chubut (CH) Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Mar 3 -4:00 - WART 1991 Oct 20 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 Jun 1 -4:00 - WART 2004 Jun 20 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # Mendoza (MZ) Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1990 Mar 4 -4:00 - WART 1990 Oct 15 -4:00 1:00 WARST 1991 Mar 1 -4:00 - WART 1991 Oct 15 -4:00 1:00 WARST 1992 Mar 1 -4:00 - WART 1992 Oct 18 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 May 23 -4:00 - WART 2004 Sep 26 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # San Luis (SL) Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1990 -3:00 1:00 ARST 1990 Mar 14 -4:00 - WART 1990 Oct 15 -4:00 1:00 WARST 1991 Mar 1 -4:00 - WART 1991 Jun 1 -3:00 - ART 1999 Oct 3 -4:00 1:00 WARST 2000 Mar 3 -3:00 - ART 2004 May 31 -4:00 - WART 2004 Jul 25 -3:00 Arg AR%sT 2008 Jan 21 -4:00 SanLuis WAR%sT 2009 Oct 11 -3:00 - ART # # Santa Cruz (SC) Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May # Córdoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 Jun 1 -4:00 - WART 2004 Jun 20 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May # Córdoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1999 Oct 3 -4:00 Arg AR%sT 2000 Mar 3 -3:00 - ART 2004 May 30 -4:00 - WART 2004 Jun 20 -3:00 Arg AR%sT 2008 Oct 18 -3:00 - ART # Aruba Link America/Curacao America/Aruba # Bolivia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/La_Paz -4:32:36 - LMT 1890 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST -4:00 - BOT # Bolivia Time # Brazil # From Paul Eggert (1993-11-18): # The mayor of Rio recently attempted to change the time zone rules # just in his city, in order to leave more summer time for the tourist trade. # The rule change lasted only part of the day; # the federal government refused to follow the city's rules, and business # was in a chaos, so the mayor backed down that afternoon. # From IATA SSIM (1996-02): # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. # [The last three states are new to this issue of the IATA SSIM.] # From Gwillim Law (1996-10-07): # Geography, history (Tocantins was part of Goiás until 1989), and other # sources of time zone information lead me to believe that AL, SE, and TO were # always in BR1, and so the only change was whether or not they observed DST.... # The earliest issue of the SSIM I have is 2/91. Each issue from then until # 9/95 says that DST is observed only in the ten states I quoted from 9/95, # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 # (UTC-4).... The other two time zones given for Brazil are BR3, which is # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's # become part of the state of Pernambuco). The boundary between BR1 and BR2 # has never been clearly stated. They've simply been called East and West. # However, some conclusions can be drawn from another IATA manual: the Airline # Coding Directory, which lists close to 400 airports in Brazil. For each # airport it gives a time zone which is coded to the SSIM. From that # information, I'm led to conclude that the states of Amapá (AP), Ceará (CE), # Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do # Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST. # From Marcos Tadeu (1998-09-27): # Brazilian official page # From Jesper Nørgaard (2000-11-03): # [For an official list of which regions in Brazil use which time zones, see:] # http://pcdsh01.on.br/Fusbr.htm # http://pcdsh01.on.br/Fusbrhv.htm # From Celso Doria via David Madeo (2002-10-09): # The reason for the delay this year has to do with elections in Brazil. # # Unlike in the United States, elections in Brazil are 100% computerized and # the results are known almost immediately. Yesterday, it was the first # round of the elections when 115 million Brazilians voted for President, # Governor, Senators, Federal Deputies, and State Deputies. Nobody is # counting (or re-counting) votes anymore and we know there will be a second # round for the Presidency and also for some Governors. The 2nd round will # take place on October 27th. # # The reason why the DST will only begin November 3rd is that the thousands # of electoral machines used cannot have their time changed, and since the # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, # the Government decided to postpone DST, instead of changing the Constitution # (maybe, for the next elections, it will be possible to change the clock)... # From Rodrigo Severo (2004-10-04): # It's just the biannual change made necessary by the much hyped, supposedly # modern Brazilian eletronic voting machines which, apparently, can't deal # with a time change between the first and the second rounds of the elections. # From Steffen Thorsen (2007-09-20): # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 # From Paul Schulze (2008-06-24): # ...by law number 11.662 of April 24, 2008 (published in the "Diario # Oficial da União"...) in Brazil there are changes in the timezones, # effective today (00:00am at June 24, 2008) as follows: # # a) The timezone UTC+5 is extinguished, with all the Acre state and the # part of the Amazonas state that had this timezone now being put to the # timezone UTC+4 # b) The whole Pará state now is put at timezone UTC+3, instead of just # part of it, as was before. # # This change follows a proposal of senator Tiao Viana of Acre state, that # proposed it due to concerns about open television channels displaying # programs inappropriate to youths in the states that had the timezone # UTC+5 too early in the night. In the occasion, some more corrections # were proposed, trying to unify the timezones of any given state. This # change modifies timezone rules defined in decree 2.784 of 18 June, # 1913. # From Rodrigo Severo (2008-06-24): # Just correcting the URL: # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 # # As a result of the above Decree I believe the America/Rio_Branco # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall # be created to represent the...west side of the Pará State. I # suggest this new timezone be called Santarem as the most # important/populated city in the affected area. # # This new timezone would be the same as the Rio_Branco timezone up to # the 2008/06/24 change which would be to UTC-3 instead of UTC-4. # From Alex Krivenyshev (2008-06-24): # This is a quick reference page for New and Old Brazil Time Zones map. # http://www.worldtimezone.com/brazil-time-new-old.php # # - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 # (state Acre and the part of the Amazonas will be UTC/GMT-04) - western # part of Par state is moving to one timezone UTC-03 (from UTC-04). # From Paul Eggert (2002-10-10): # The official decrees referenced below are mostly taken from # Decretos sobre o Horário de Verão no Brasil. # http://pcdsh01.on.br/DecHV.html # From Steffen Thorsen (2008-08-29): # As announced by the government and many newspapers in Brazil late # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and # it will end on 2009-02-15 (current rule for Brazil is fine). Based on # past years experience with the elections, there was a good chance that # the start was postponed to November, but it did not happen this year. # # It has not yet been posted to http://pcdsh01.on.br/DecHV.html # # An official page about it: # http://www.mme.gov.br/site/news/detail.do?newsId=16722 # Note that this link does not always work directly, but must be accessed # by going to # http://www.mme.gov.br/first # # One example link that works directly: # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 # (Portuguese) # # We have a written a short article about it as well: # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html # # From Alexander Krivenyshev (2011-10-04): # State Bahia will return to Daylight savings time this year after 8 years off. # The announcement was made by Governor Jaques Wagner in an interview to a # television station in Salvador. # In Portuguese: # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html # From Guilherme Bernardes Rodrigues (2011-10-07): # There is news in the media, however there is still no decree about it. # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the # official agency about time in Brazil, and she confirmed that the old rule is # still in force. # From Guilherme Bernardes Rodrigues (2011-10-14) # It's official, the President signed a decree that includes Bahia in summer # time. # [ and in a second message (same day): ] # I found the decree. # # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 # Link : # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 # From Kelley Cook (2012-10-16): # The governor of state of Bahia in Brazil announced on Thursday that # due to public pressure, he is reversing the DST policy they implemented # last year and will not be going to Summer Time on October 21st.... # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia # From Rodrigo Severo (2012-10-16): # Tocantins state will have DST. # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html # From Steffen Thorsen (2013-09-20): # Tocantins in Brazil is very likely not to observe DST from October.... # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto # We will keep this article updated when this is confirmed: # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html # From Steffen Thorsen (2013-10-17): # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html # Senator Jorge Viana announced that Acre will change time zone on November 10. # He did not specify the time of the change, nor if western parts of Amazonas # will change as well. # # From Paul Eggert (2013-10-17): # For now, assume western Amazonas will change as well. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Decree 20,466 (1931-10-01) # Decree 21,896 (1932-01-10) Rule Brazil 1931 only - Oct 3 11:00 1:00 S Rule Brazil 1932 1933 - Apr 1 0:00 0 - Rule Brazil 1932 only - Oct 3 0:00 1:00 S # Decree 23,195 (1933-10-10) # revoked DST. # Decree 27,496 (1949-11-24) # Decree 27,998 (1950-04-13) Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S Rule Brazil 1950 only - Apr 16 1:00 0 - Rule Brazil 1951 1952 - Apr 1 0:00 0 - # Decree 32,308 (1953-02-24) Rule Brazil 1953 only - Mar 1 0:00 0 - # Decree 34,724 (1953-11-30) # revoked DST. # Decree 52,700 (1963-10-18) # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. # Decree 53,071 (1963-12-03) # extended the above decree to all of the national territory on 12-09. Rule Brazil 1963 only - Dec 9 0:00 1:00 S # Decree 53,604 (1964-02-25) # extended summer time by one day to 1964-03-01 00:00 (start of school). Rule Brazil 1964 only - Mar 1 0:00 0 - # Decree 55,639 (1965-01-27) Rule Brazil 1965 only - Jan 31 0:00 1:00 S Rule Brazil 1965 only - Mar 31 0:00 0 - # Decree 57,303 (1965-11-22) Rule Brazil 1965 only - Dec 1 0:00 1:00 S # Decree 57,843 (1966-02-18) Rule Brazil 1966 1968 - Mar 1 0:00 0 - Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S # Decree 63,429 (1968-10-15) # revoked DST. # Decree 91,698 (1985-09-27) Rule Brazil 1985 only - Nov 2 0:00 1:00 S # Decree 92,310 (1986-01-21) # Decree 92,463 (1986-03-13) Rule Brazil 1986 only - Mar 15 0:00 0 - # Decree 93,316 (1986-10-01) Rule Brazil 1986 only - Oct 25 0:00 1:00 S Rule Brazil 1987 only - Feb 14 0:00 0 - # Decree 94,922 (1987-09-22) Rule Brazil 1987 only - Oct 25 0:00 1:00 S Rule Brazil 1988 only - Feb 7 0:00 0 - # Decree 96,676 (1988-09-12) # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) Rule Brazil 1988 only - Oct 16 0:00 1:00 S Rule Brazil 1989 only - Jan 29 0:00 0 - # Decree 98,077 (1989-08-21) # with the same exceptions Rule Brazil 1989 only - Oct 15 0:00 1:00 S Rule Brazil 1990 only - Feb 11 0:00 0 - # Decree 99,530 (1990-09-17) # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. # Decree 99,629 (1990-10-19) adds BA, MT. Rule Brazil 1990 only - Oct 21 0:00 1:00 S Rule Brazil 1991 only - Feb 17 0:00 0 - # Unnumbered decree (1991-09-25) # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. Rule Brazil 1991 only - Oct 20 0:00 1:00 S Rule Brazil 1992 only - Feb 9 0:00 0 - # Unnumbered decree (1992-10-16) # adopted by same states. Rule Brazil 1992 only - Oct 25 0:00 1:00 S Rule Brazil 1993 only - Jan 31 0:00 0 - # Decree 942 (1993-09-28) # adopted by same states, plus AM. # Decree 1,252 (1994-09-22; # web page corrected 2004-01-07) adopted by same states, minus AM. # Decree 1,636 (1995-09-14) # adopted by same states, plus MT and TO. # Decree 1,674 (1995-10-13) # adds AL, SE. Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - Rule Brazil 1996 only - Feb 11 0:00 0 - # Decree 2,000 (1996-09-04) # adopted by same states, minus AL, SE. Rule Brazil 1996 only - Oct 6 0:00 1:00 S Rule Brazil 1997 only - Feb 16 0:00 0 - # From Daniel C. Sobral (1998-02-12): # In 1997, the DS began on October 6. The stated reason was that # because international television networks ignored Brazil's policy on DS, # they bought the wrong times on satellite for coverage of Pope's visit. # This year, the ending date of DS was postponed to March 1 # to help dealing with the shortages of electric power. # # Decree 2,317 (1997-09-04), adopted by same states. Rule Brazil 1997 only - Oct 6 0:00 1:00 S # Decree 2,495 # (1998-02-10) Rule Brazil 1998 only - Mar 1 0:00 0 - # Decree 2,780 (1998-09-11) # adopted by the same states as before. Rule Brazil 1998 only - Oct 11 0:00 1:00 S Rule Brazil 1999 only - Feb 21 0:00 0 - # Decree 3,150 # (1999-08-23) adopted by same states. # Decree 3,188 (1999-09-30) # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. Rule Brazil 1999 only - Oct 3 0:00 1:00 S Rule Brazil 2000 only - Feb 27 0:00 0 - # Decree 3,592 (2000-09-06) # adopted by the same states as before. # Decree 3,630 (2000-10-13) # repeals DST in PE and RR, effective 2000-10-15 00:00. # Decree 3,632 (2000-10-17) # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. # Decree 3,916 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. # 4,399 Rule Brazil 2002 only - Nov 3 0:00 1:00 S # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. # 4,844 Rule Brazil 2003 only - Oct 19 0:00 1:00 S # Decree 5,223 (2004-10-01) reestablishes DST in MT. # 5,223 Rule Brazil 2004 only - Nov 2 0:00 1:00 S # Decree 5,539 (2005-09-19), # adopted by the same states as before. Rule Brazil 2005 only - Oct 16 0:00 1:00 S # Decree 5,920 (2006-10-03), # adopted by the same states as before. Rule Brazil 2006 only - Nov 5 0:00 1:00 S Rule Brazil 2007 only - Feb 25 0:00 0 - # Decree 6,212 (2007-09-26), # adopted by the same states as before. Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S # From Frederico A. C. Neves (2008-09-10): # According to this decree # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the # 3rd Feb Sunday. There is an exception on the return date when this is # the Carnival Sunday then the return date will be the next Sunday... Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - # From Arthur David Olson (2008-09-29): # The next is wrong in some years but is better than nothing. Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - # The latest ruleset listed above says that the following states observe DST: # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Fernando de Noronha (administratively part of PE) Zone America/Noronha -2:09:40 - LMT 1914 -2:00 Brazil FN%sT 1990 Sep 17 -2:00 - FNT 1999 Sep 30 -2:00 Brazil FN%sT 2000 Oct 15 -2:00 - FNT 2001 Sep 13 -2:00 Brazil FN%sT 2002 Oct 1 -2:00 - FNT # Other Atlantic islands have no permanent settlement. # These include Trindade and Martim Vaz (administratively part of ES), # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; # it also included the Penedos. # # Amapá (AP), east Pará (PA) # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. # The division between east and west Pará is the river Xingu. # In the north a very small part from the river Javary (now Jari I guess, # the border with Amapá) to the Amazon, then to the Xingu. Zone America/Belem -3:13:56 - LMT 1914 -3:00 Brazil BR%sT 1988 Sep 12 -3:00 - BRT # # west Pará (PA) # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. Zone America/Santarem -3:38:48 - LMT 1914 -4:00 Brazil AM%sT 1988 Sep 12 -4:00 - AMT 2008 Jun 24 0:00 -3:00 - BRT # # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), # Paraíba (PB) Zone America/Fortaleza -2:34:00 - LMT 1914 -3:00 Brazil BR%sT 1990 Sep 17 -3:00 - BRT 1999 Sep 30 -3:00 Brazil BR%sT 2000 Oct 22 -3:00 - BRT 2001 Sep 13 -3:00 Brazil BR%sT 2002 Oct 1 -3:00 - BRT # # Pernambuco (PE) (except Atlantic islands) Zone America/Recife -2:19:36 - LMT 1914 -3:00 Brazil BR%sT 1990 Sep 17 -3:00 - BRT 1999 Sep 30 -3:00 Brazil BR%sT 2000 Oct 15 -3:00 - BRT 2001 Sep 13 -3:00 Brazil BR%sT 2002 Oct 1 -3:00 - BRT # # Tocantins (TO) Zone America/Araguaina -3:12:48 - LMT 1914 -3:00 Brazil BR%sT 1990 Sep 17 -3:00 - BRT 1995 Sep 14 -3:00 Brazil BR%sT 2003 Sep 24 -3:00 - BRT 2012 Oct 21 -3:00 Brazil BR%sT 2013 Sep -3:00 - BRT # # Alagoas (AL), Sergipe (SE) Zone America/Maceio -2:22:52 - LMT 1914 -3:00 Brazil BR%sT 1990 Sep 17 -3:00 - BRT 1995 Oct 13 -3:00 Brazil BR%sT 1996 Sep 4 -3:00 - BRT 1999 Sep 30 -3:00 Brazil BR%sT 2000 Oct 22 -3:00 - BRT 2001 Sep 13 -3:00 Brazil BR%sT 2002 Oct 1 -3:00 - BRT # # Bahia (BA) # There are too many Salvadors elsewhere, so use America/Bahia instead # of America/Salvador. Zone America/Bahia -2:34:04 - LMT 1914 -3:00 Brazil BR%sT 2003 Sep 24 -3:00 - BRT 2011 Oct 16 -3:00 Brazil BR%sT 2012 Oct 21 -3:00 - BRT # # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), # Santa Catarina (SC), Rio Grande do Sul (RS) Zone America/Sao_Paulo -3:06:28 - LMT 1914 -3:00 Brazil BR%sT 1963 Oct 23 0:00 -3:00 1:00 BRST 1964 -3:00 Brazil BR%sT # # Mato Grosso do Sul (MS) Zone America/Campo_Grande -3:38:28 - LMT 1914 -4:00 Brazil AM%sT # # Mato Grosso (MT) Zone America/Cuiaba -3:44:20 - LMT 1914 -4:00 Brazil AM%sT 2003 Sep 24 -4:00 - AMT 2004 Oct 1 -4:00 Brazil AM%sT # # Rondônia (RO) Zone America/Porto_Velho -4:15:36 - LMT 1914 -4:00 Brazil AM%sT 1988 Sep 12 -4:00 - AMT # # Roraima (RR) Zone America/Boa_Vista -4:02:40 - LMT 1914 -4:00 Brazil AM%sT 1988 Sep 12 -4:00 - AMT 1999 Sep 30 -4:00 Brazil AM%sT 2000 Oct 15 -4:00 - AMT # # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto # The great circle line from Tabatinga to Porto Acre divides # east from west Amazonas. Zone America/Manaus -4:00:04 - LMT 1914 -4:00 Brazil AM%sT 1988 Sep 12 -4:00 - AMT 1993 Sep 28 -4:00 Brazil AM%sT 1994 Sep 22 -4:00 - AMT # # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, # Eirunepé, Envira, Ipixuna Zone America/Eirunepe -4:39:28 - LMT 1914 -5:00 Brazil AC%sT 1988 Sep 12 -5:00 - ACT 1993 Sep 28 -5:00 Brazil AC%sT 1994 Sep 22 -5:00 - ACT 2008 Jun 24 0:00 -4:00 - AMT 2013 Nov 10 -5:00 - ACT # # Acre (AC) Zone America/Rio_Branco -4:31:12 - LMT 1914 -5:00 Brazil AC%sT 1988 Sep 12 -5:00 - ACT 2008 Jun 24 0:00 -4:00 - AMT 2013 Nov 10 -5:00 - ACT # Chile +# From Paul Eggert (2015-04-03): +# Shanks & Pottenger says America/Santiago introduced standard time in +# 1890 and rounds its UTC offset to 70W40; guess that in practice this +# was the same offset as in 1916-1919. It also says Pacific/Easter +# standardized on 109W22 in 1890; assume this didn't change the clocks. +# +# Dates for America/Santiago from 1910 to 2004 are primarily from +# the following source, cited by Oscar van Vlijmen (2006-10-08): +# [1] Chile Law +# http://www.webexhibits.org/daylightsaving/chile.html +# This contains a copy of a this official table: +# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) +# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm +# [1] needs several corrections, though. +# +# The first set of corrections is from: +# [2] History of the Official Time of Chile +# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: +# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html +# This is an English translation of: +# Historia de la hora oficial de Chile (retrieved 2012-10-24). See: +# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm +# A fancier Spanish version (requiring mouse-clicking) is at: +# http://www.horaoficial.cl/historia_hora.html +# Conflicts between [1] and [2] were resolved as follows: +# +# - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites +# Boletín Nº 1, Aviso Nº 1 (1910). Go with [2]. +# +# - [1] says SMT was -4:42:45, [2] says Chile's official time from +# 1916 to 1919 was -4:42:46.3, the meridian of Chile's National +# Astronomical Observatory (OAN), then located in what is now +# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. +# +# - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites +# Boletín Nº 22, Aviso Nº 129/1918 (1918-08-23). Go with [2]. +# +# - [1] does not give times for transitions; assume they occur +# at midnight mainland time, the current common practice. However, +# go with [2]'s specification of 23:00 for the 1947-05-21 transition. +# +# Another correction to [1] is from Jesper Nørgaard Welen, who +# wrote (2006-10-08), "I think that there are some obvious mistakes in +# the suggested link from Oscar van Vlijmen,... for instance entry 66 +# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at +# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16 +# respectively), but anyhow it clears up some doubts too." +# +# Data for Pacific/Easter from 1910 through 1967 come from Shanks & +# Pottenger. After that, for lack of better info assume +# Pacific/Easter is always two hours behind America/Santiago; +# this is known to work for DST transitions starting in 2008 and +# may well be true for earlier transitions. + # From Eduardo Krell (1995-10-19): # The law says to switch to DST at midnight [24:00] on the second SATURDAY # of October.... The law is the same for March and October. # (1998-09-29): # Because of the drought this year, the government decided to go into # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... # (unless there's another dry season next year, I guess). # From Julio I. Pacheco Troncoso (1999-03-18): # Because of the same drought, the government decided to end DST later, # on April 3, (one-time change). -# From Oscar van Vlijmen (2006-10-08): -# http://www.horaoficial.cl/cambio.htm - -# From Jesper Nørgaard Welen (2006-10-08): -# I think that there are some obvious mistakes in the suggested link -# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 -# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 -# (they should have been 1990-09-15 and 1990-09-16 respectively), but -# anyhow it clears up some doubts too. - -# From Paul Eggert (2014-08-12): -# The following data entries for Chile and America/Santiago are from -# (2006-09-20), transcribed by -# Jesper Nørgaard Welen. The data entries for Pacific/Easter are from Shanks -# & Pottenger, except with DST transitions after 1932 cloned from -# America/Santiago. The pre-1980 Pacific/Easter data entries are dubious, -# but we have no other source. - # From Germán Poo-Caamaño (2008-03-03): # Due to drought, Chile extends Daylight Time in three weeks. This # is one-time change (Saturday 3/29 at 24:00 for America/Santiago # and Saturday 3/29 at 22:00 for Pacific/Easter) # The Supreme Decree is located at # http://www.shoa.cl/servicios/supremo316.pdf -# and the instructions for 2008 are located in: -# http://www.horaoficial.cl/cambio.htm - +# # From José Miguel Garrido (2008-03-05): -# ... -# You could see the announces of the change on # http://www.shoa.cl/noticias/2008/04hora/hora.htm # From Angel Chiang (2010-03-04): # Subject: DST in Chile exceptionally extended to 3 April due to earthquake # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 -# (in Spanish, last paragraph). # -# This is breaking news. There should be more information available later. - # From Arthur David Olson (2010-03-06): # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. -# From Glenn Eychaner (2011-03-02): -# It appears that the Chilean government has decided to postpone the -# change from summer time to winter time again, by three weeks to April -# 2nd: -# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 -# -# This is not yet reflected in the official "cambio de hora" site, but -# probably will be soon: -# http://www.horaoficial.cl/cambio.htm - -# From Arthur David Olson (2011-03-02): -# The emol.com article mentions a water shortage as the cause of the -# postponement, which may mean that it's not a permanent change. - # From Glenn Eychaner (2011-03-28): -# The article: # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} -# # In English: # Chile's clocks will go back an hour this year on the 7th of May instead # of this Saturday. They will go forward again the 3rd Saturday in -# August, not in October as they have since 1968. This is a pilot plan -# which will be reevaluated in 2012. +# August, not in October as they have since 1968. # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): # As stated in the website of the Chilean Energy Ministry # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html # The Chilean Government has decided to postpone the entrance into winter time -# (to leave DST) from March 11 2012 to April 28th 2012. The decision has not -# been yet formalized but it will within the next days. +# (to leave DST) from March 11 2012 to April 28th 2012.... # Quote from the website communication: # # 6. For the year 2012, the dates of entry into winter time will be as follows: # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 # of the same day. # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be # 01:00 on September 2. # From Steffen Thorsen (2013-02-15): # According to several news sources, Chile has extended DST this year, # they will end DST later and start DST earlier than planned. They # hope to save energy. The new end date is 2013-04-28 00:00 and new # start date is 2013-09-08 00:00.... # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm # From José Miguel Garrido (2014-02-19): # Today appeared in the Diario Oficial a decree amending the time change # dates to 2014. # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf # From Eduardo Romero Urra (2015-03-03): # Today has been published officially that Chile will use the DST time # permanently until March 25 of 2017 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg # # From Paul Eggert (2015-03-03): # For now, assume that the extension will persist indefinitely. -# NOTE: ChileAQ rules for Antarctic bases are stored separately in the -# 'antarctica' file. - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Chile 1927 1932 - Sep 1 0:00 1:00 S +Rule Chile 1927 1931 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - -Rule Chile 1942 only - Jun 1 4:00u 0 - -Rule Chile 1942 only - Aug 1 5:00u 1:00 S -Rule Chile 1946 only - Jul 15 4:00u 1:00 S -Rule Chile 1946 only - Sep 1 3:00u 0:00 - -Rule Chile 1947 only - Apr 1 4:00u 0 - Rule Chile 1968 only - Nov 3 4:00u 1:00 S Rule Chile 1969 only - Mar 30 3:00u 0 - Rule Chile 1969 only - Nov 23 4:00u 1:00 S Rule Chile 1970 only - Mar 29 3:00u 0 - Rule Chile 1971 only - Mar 14 3:00u 0 - Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - Rule Chile 1973 only - Sep 30 4:00u 1:00 S Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S Rule Chile 1987 only - Apr 12 3:00u 0 - -Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - -Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S -Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S -Rule Chile 1990 only - Mar 18 3:00u 0 - +Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - +Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S Rule Chile 1990 only - Sep 16 4:00u 1:00 S Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S Rule Chile 1997 only - Mar 30 3:00u 0 - Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - Rule Chile 1998 only - Sep 27 4:00u 1:00 S Rule Chile 1999 only - Apr 4 3:00u 0 - Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - # N.B.: the end of March 29 in Chile is March 30 in Universal time, # which is used below in specifying the transition. Rule Chile 2008 only - Mar 30 3:00u 0 - Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - Rule Chile 2011 only - May Sun>=2 3:00u 0 - Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 - Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Santiago -4:42:46 - LMT 1890 - -4:42:46 - SMT 1910 # Santiago Mean Time + -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time -5:00 - CLT 1916 Jul 1 # Chile Time - -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time - -4:00 - CLT 1919 Jul 1 # Chile Time - -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time - -5:00 Chile CL%sT 1947 May 22 # Chile Time + -4:42:46 - SMT 1918 Sep 10 + -4:00 - CLT 1919 Jul 1 + -4:42:46 - SMT 1927 Sep 1 + -5:00 Chile CL%sT 1932 Sep 1 + -4:00 - CLT 1942 Jun 1 + -5:00 - CLT 1942 Aug 1 + -4:00 - CLT 1946 Jul 15 + -4:00 1:00 CLST 1946 Sep 1 # central Chile + -4:00 - CLT 1947 Apr 1 + -5:00 - CLT 1947 May 21 23:00 -4:00 Chile CL%sT 2015 Apr 26 3:00u -3:00 - CLT -Zone Pacific/Easter -7:17:44 - LMT 1890 +Zone Pacific/Easter -7:17:28 - LMT 1890 -7:17:28 - EMT 1932 Sep # Easter Mean Time -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time -6:00 Chile EAS%sT 2015 Apr 26 3:00u -5:00 - EAST # # Salas y Gómez Island is uninhabited. # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, # and Antarctic bases, are like America/Santiago. + +# Antarctic base using South American rules +# (See the file 'antarctica' for more.) +# +# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) +# +# From Ethan Dicks (1996-10-06): +# It keeps the same time as Punta Arenas, Chile, because, just like us +# and the South Pole, that's the other end of their supply line.... +# I verified with someone who was there that since 1980, +# Palmer has followed Chile. Prior to that, before the Falklands War, +# Palmer used to be supplied from Argentina. +# +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Antarctica/Palmer 0 - zzz 1965 + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1982 May + -4:00 Chile CL%sT 2015 Apr 26 3:00u + -3:00 - CLT # Colombia # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, # "A variation of fifteen minutes in the public clocks of Bogota is not rare." # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule CO 1992 only - May 3 0:00 1:00 S Rule CO 1993 only - Apr 4 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time -5:00 CO CO%sT # Colombia Time # Malpelo, Providencia, San Andres # no information; probably like America/Bogota # Curaçao # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. # # From Paul Eggert (2006-03-22): # Shanks & Pottenger say that The Bottom and Philipsburg have been at # -4:00 since standard time was introduced on 1912-03-02; and that # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say # Saba Island has been like Curaçao. # This all predates our 1970 cutoff, though. # # By July 2007 Curaçao and St Maarten are planned to become # associated states within the Netherlands, much like Aruba; # Bonaire, Saba and St Eustatius would become directly part of the # Netherlands as Kingdom Islands. This won't affect their time zones # though, as far as we know. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad -4:30 - ANT 1965 # Netherlands Antilles Time -4:00 - AST # From Arthur David Olson (2011-06-15): # use links for places with new iso3166 codes. # The name "Lower Prince's Quarter" is both longer than fourteen characters # and contains an apostrophe; use "Lower_Princes" below. Link America/Curacao America/Lower_Princes # Sint Maarten Link America/Curacao America/Kralendijk # Caribbean Netherlands # Ecuador # # Milne says the Central and South American Telegraph Company used -5:24:15. # # From Paul Eggert (2007-03-04): # Apparently Ecuador had a failed experiment with DST in 1992. # (2007-02-27) and # (2006-11-06) both # talk about "hora Sixto". Leave this alone for now, as we have no data. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Guayaquil -5:19:20 - LMT 1890 -5:14:00 - QMT 1931 # Quito Mean Time -5:00 - ECT # Ecuador Time Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno -5:00 - ECT 1986 -6:00 - GALT # Galápagos Time # Falklands # From Paul Eggert (2006-03-22): # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except # the IATA gives 1996-09-08. Go with Shanks & Pottenger. # From Falkland Islands Government Office, London (2001-01-22) # via Jesper Nørgaard: # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 # September. It is anticipated that the clocks will revert back at 2 # am on Sunday 21 April 2002 and advance to summer time at 2 am on # Sunday 1 September. # From Rives McDow (2001-02-13): # # I have communicated several times with people there, and the last # time I had communications that was helpful was in 1998. Here is # what was said then: # # "The general rule was that Stanley used daylight saving and the Camp # did not. However for various reasons many people in the Camp have # started to use daylight saving (known locally as 'Stanley Time') # There is no rule as to who uses daylight saving - it is a matter of # personal choice and so it is impossible to draw a map showing who # uses it and who does not. Any list would be out of date as soon as # it was produced. This year daylight saving ended on April 18/19th # and started again on September 12/13th. I do not know what the rule # is, but can find out if you like. We do not change at the same time # as UK or Chile." # # I did have in my notes that the rule was "Second Saturday in Sep at # 0:00 until third Saturday in Apr at 0:00". I think that this does # not agree in some cases with Shanks; is this true? # # Also, there is no mention in the list that some areas in the # Falklands do not use DST. I have found in my communications there # that these areas are on the western half of East Falkland and all of # West Falkland. Stanley is the only place that consistently observes # DST. Again, as in other places in the world, the farmers don't like # it. West Falkland is almost entirely sheep farmers. # # I know one lady there that keeps a list of which farm keeps DST and # which doesn't each year. She runs a shop in Stanley, and says that # the list changes each year. She uses it to communicate to her # customers, catching them when they are home for lunch or dinner. # From Paul Eggert (2001-03-05): # For now, we'll just record the time in Stanley, since we have no # better info. # From Steffen Thorsen (2011-04-01): # The Falkland Islands will not turn back clocks this winter, but stay on # daylight saving time. # # One source: # http://www.falklandnews.com/public/story.cfm?get=5914&source=3 # # We have gotten this confirmed by a clerk of the legislative assembly: # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 # hours) on the first Sunday of September at 0200hrs. # # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands # will not revert to local mean time, but clocks will remain on Summer # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term # change to local time following the trial period will be notified. # # From Andrew Newman (2012-02-24) # A letter from Justin McPhee, Chief Executive, # Cable & Wireless Falkland Islands (dated 2012-02-22) # states... # The current Atlantic/Stanley entry under South America expects the # clocks to go back to standard Falklands Time (FKT) on the 15th April. # The database entry states that in 2011 Stanley was staying on fixed # summer time on a trial basis only. FIG need to contact IANA and/or # the maintainers of the database to inform them we're adopting # the same policy this year and suggest recommendations for future years. # # For now we will assume permanent summer time for the Falklands # until advised differently (to apply for 2012 and beyond, after the 2011 # experiment was apparently successful.) # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - Rule Falk 1939 only - Oct 1 0:00 1:00 S Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S Rule Falk 1943 only - Jan 1 0:00 0 - Rule Falk 1983 only - Sep lastSun 0:00 1:00 S Rule Falk 1984 1985 - Apr lastSun 0:00 0 - Rule Falk 1984 only - Sep 16 0:00 1:00 S Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Stanley -3:51:24 - LMT 1890 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time -4:00 Falk FK%sT 1983 May # Falkland Is Time -3:00 Falk FK%sT 1985 Sep 15 -4:00 Falk FK%sT 2010 Sep 5 2:00 -3:00 - FKST # French Guiana # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Cayenne -3:29:20 - LMT 1911 Jul -4:00 - GFT 1967 Oct # French Guiana Time -3:00 - GFT # Guyana # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown -3:45 - GBGT 1966 May 26 # Br Guiana Time -3:45 - GYT 1975 Jul 31 # Guyana Time -3:00 - GYT 1991 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. -4:00 - GYT # Paraguay # # From Paul Eggert (2006-03-22): # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, # and autumn transitions are 00:00 -> 23:00. Go with pre-1999 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. # # From Waldemar Villamayor-Venialbo (2013-09-20): # No time of the day is established for the adjustment, so people normally # adjust their clocks at 0 hour of the given dates. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Para 1975 1988 - Oct 1 0:00 1:00 S Rule Para 1975 1978 - Mar 1 0:00 0 - Rule Para 1979 1991 - Apr 1 0:00 0 - Rule Para 1989 only - Oct 22 0:00 1:00 S Rule Para 1990 only - Oct 1 0:00 1:00 S Rule Para 1991 only - Oct 6 0:00 1:00 S Rule Para 1992 only - Mar 1 0:00 0 - Rule Para 1992 only - Oct 5 0:00 1:00 S Rule Para 1993 only - Mar 31 0:00 0 - Rule Para 1993 1995 - Oct 1 0:00 1:00 S Rule Para 1994 1995 - Feb lastSun 0:00 0 - Rule Para 1996 only - Mar 1 0:00 0 - # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. # From Steffen Thorsen (2000-10-02): # I have three independent reports that Paraguay changed to DST this Sunday # (10-01). # # Translated by Gwillim Law (2001-02-27) from # Noticias, a daily paper in Asunción, Paraguay (2000-10-01): # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm # Starting at 0:00 today, the clock will be set forward 60 minutes, in # fulfillment of Decree No. 7,273 of the Executive Power.... The time change # system has been operating for several years. Formerly there was a separate # decree each year; the new law has the same effect, but permanently. Every # year, the time will change on the first Sunday of October; likewise, the # clock will be set back on the first Sunday of March. # Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. Rule Para 1997 only - Feb lastSun 0:00 0 - # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - # From Rives McDow (2002-02-28): # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the # dst method to be from the first Sunday in September to the first Sunday in # April. Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S # # From Jesper Nørgaard Welen (2005-01-02): # There are several sources that claim that Paraguay made # a timezone rule change in autumn 2004. # From Steffen Thorsen (2005-01-05): # Decree 1,867 (2004-03-05) # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13) # http://www.presidencia.gov.py/decretos/D1867.pdf Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - # From Carlos Raúl Perasso (2010-02-18): # By decree number 3958 issued yesterday # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf # Paraguay changes its DST schedule, postponing the March rule to April and # modifying the October date. The decree reads: # ... # Art. 1. It is hereby established that from the second Sunday of the month of # April of this year (2010), the official time is to be set back 60 minutes, # and that on the first Sunday of the month of October, it is to be set # forward 60 minutes, in all the territory of the Paraguayan Republic. # ... Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - # # From Steffen Thorsen (2013-03-07): # Paraguay will end DST on 2013-03-24 00:00.... # http://www.ande.gov.py/interna.php?id=1075 # # From Carlos Raúl Perasso (2013-03-15): # The change in Paraguay is now final. Decree number 10780 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf # From Carlos Raúl Perasso (2014-02-28): # Decree 1264 can be found at: # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf Rule Para 2013 max - Mar Sun>=22 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time -4:00 - PYT 1972 Oct # Paraguay Time -3:00 - PYT 1974 Apr -4:00 Para PY%sT # Peru # # From Evelyn C. Leeper via Mark Brader (2003-10-26) # : # When we were in Peru in 1985-1986, they apparently switched over # sometime between December 29 and January 3 while we were on the Amazon. # # From Paul Eggert (2006-03-22): # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Peru 1938 only - Jan 1 0:00 1:00 S Rule Peru 1938 only - Apr 1 0:00 0 - Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - Rule Peru 1986 1987 - Jan 1 0:00 1:00 S Rule Peru 1986 1987 - Apr 1 0:00 0 - Rule Peru 1990 only - Jan 1 0:00 1:00 S Rule Peru 1990 only - Apr 1 0:00 0 - # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. Rule Peru 1994 only - Jan 1 0:00 1:00 S Rule Peru 1994 only - Apr 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Lima -5:08:12 - LMT 1890 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? -5:00 Peru PE%sT # Peru Time # South Georgia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken -2:00 - GST # South Georgia Time # South Sandwich Is # uninhabited; scientific personnel have wintered # Suriname # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Paramaribo -3:40:40 - LMT 1911 -3:40:52 - PMT 1935 # Paramaribo Mean Time -3:40:36 - PMT 1945 Oct # The capital moved? -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time -3:30 - SRT 1984 Oct # Suriname Time -3:00 - SRT # Trinidad and Tobago # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 -4:00 - AST # These all agree with Trinidad and Tobago since 1970. Link America/Port_of_Spain America/Anguilla Link America/Port_of_Spain America/Antigua Link America/Port_of_Spain America/Dominica Link America/Port_of_Spain America/Grenada Link America/Port_of_Spain America/Guadeloupe Link America/Port_of_Spain America/Marigot # St Martin (French part) Link America/Port_of_Spain America/Montserrat Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis Link America/Port_of_Spain America/St_Lucia Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) Link America/Port_of_Spain America/St_Vincent Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) # Uruguay # From Paul Eggert (1993-11-18): # Uruguay wins the prize for the strangest peacetime manipulation of the rules. # From Shanks & Pottenger: # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS Rule Uruguay 1924 1926 - Apr 1 0:00 0 - Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, # and 1943 Apr 13 "to present time"; go with Shanks & Pottenger. Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS Rule Uruguay 1942 only - Jan 1 0:00 0 - Rule Uruguay 1942 only - Dec 14 0:00 1:00 S Rule Uruguay 1943 only - Mar 14 0:00 0 - Rule Uruguay 1959 only - May 24 0:00 1:00 S Rule Uruguay 1959 only - Nov 15 0:00 0 - Rule Uruguay 1960 only - Jan 17 0:00 1:00 S Rule Uruguay 1960 only - Mar 6 0:00 0 - Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S Rule Uruguay 1965 only - Sep 26 0:00 0 - Rule Uruguay 1966 1967 - Oct 31 0:00 0 - Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS Rule Uruguay 1968 1970 - Dec 2 0:00 0 - Rule Uruguay 1972 only - Apr 24 0:00 1:00 S Rule Uruguay 1972 only - Aug 15 0:00 0 - Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS Rule Uruguay 1974 only - Dec 22 0:00 1:00 S Rule Uruguay 1976 only - Oct 1 0:00 0 - Rule Uruguay 1977 only - Dec 4 0:00 1:00 S Rule Uruguay 1978 only - Apr 1 0:00 0 - Rule Uruguay 1979 only - Oct 1 0:00 1:00 S Rule Uruguay 1980 only - May 1 0:00 0 - Rule Uruguay 1987 only - Dec 14 0:00 1:00 S Rule Uruguay 1988 only - Mar 14 0:00 0 - Rule Uruguay 1988 only - Dec 11 0:00 1:00 S Rule Uruguay 1989 only - Mar 12 0:00 0 - Rule Uruguay 1989 only - Oct 29 0:00 1:00 S # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S Rule Uruguay 1992 only - Oct 18 0:00 1:00 S Rule Uruguay 1993 only - Feb 28 0:00 0 - # From Eduardo Cota (2004-09-20): # The Uruguayan government has decreed a change in the local time.... # http://www.presidencia.gub.uy/decretos/2004091502.htm Rule Uruguay 2004 only - Sep 19 0:00 1:00 S # From Steffen Thorsen (2005-03-11): # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to # save energy ... it was postponed two weeks.... # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm Rule Uruguay 2005 only - Mar 27 2:00 0 - # From Eduardo Cota (2005-09-27): # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at # 02:00 local time, official time in Uruguay will be at GMT -2. Rule Uruguay 2005 only - Oct 9 2:00 1:00 S Rule Uruguay 2006 only - Mar 12 2:00 0 - # From Jesper Nørgaard Welen (2006-09-06): # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 -3:44:44 - MMT 1920 May 1 # Montevideo MT -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time -3:00 Uruguay UY%sT # Venezuela # # From John Stainforth (2007-11-28): # ... the change for Venezuela originally expected for 2007-12-31 has # been brought forward to 2007-12-09. The official announcement was # published today in the "Gaceta Oficial de la República Bolivariana # de Venezuela, número 38.819" (official document for all laws or # resolution publication) # http://www.globovision.com/news.php?nid=72208 # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Caracas -4:27:44 - LMT 1890 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? -4:30 - VET 1965 # Venezuela Time -4:00 - VET 2007 Dec 9 3:00 -4:30 - VET Index: stable/6/share/zoneinfo =================================================================== --- stable/6/share/zoneinfo (revision 283046) +++ stable/6/share/zoneinfo (revision 283047) Property changes on: stable/6/share/zoneinfo ___________________________________________________________________ Modified: svn:mergeinfo ## -0,0 +0,2 ## Merged /head/contrib/tzdata:r283042 Merged /vendor/tzdata/dist:r283040