diff --git a/share/zoneinfo/southamerica b/share/zoneinfo/southamerica index e2244cf2379d..989c56870bec 100644 --- a/share/zoneinfo/southamerica +++ b/share/zoneinfo/southamerica @@ -1,1353 +1,1374 @@ -# @(#)southamerica 8.27 +# @(#)southamerica 8.29 # 
 
 # This data is by no means authoritative; if you think you know better,
 # go ahead and edit the file (and please send any changes to
 # tz@elsie.nci.nih.gov for general use in the future).
 
 # From Paul Eggert (2006-03-22):
 # A good source for time zone historical data outside the U.S. is
 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
 # San Diego: ACS Publications, Inc. (2003).
 #
 # 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, Shanks & Pottenger is the source for
 # entries through 1990, and IATA SSIM is the source for entries afterwards.
 #
 # 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 Sao 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 Brasilia time" is considered the
 #	"official time" because Brasilia is the capital city.
 #	The other three time zones are called "Brasilia 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	Brasilia
 #	-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 (1988-01-199):
 # 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 Hidrografia 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 Sao 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 Fabian L. Arce Jofre (2000-04-04):
 # The law that claimed DST for Argentina was derogated by President Fernando
 # de la Rua 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 Norgaard Welen (2007-12-26)
 # The last hurdle of Argentina DST is over, the proposal was approved in
 # the lower chamber too (Deputados) 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
 # 
 # OR
 # 
 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)
 # 
 
 Rule	Arg	2007	only	-	Dec	30	0:00	1:00	S
 Rule	Arg	2008	max	-	Mar	Sun>=15	0:00	0	-
 Rule	Arg	2008	max	-	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 (2006-03-22):
 # 
 # Hora de verano para la Republica Argentina (2003-06-08)
 #  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, Tucuman.
 #
 # From Mariano Absatz (2004-06-14):
 # ... this weekend, the Province of Tucuman 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 pais
 # (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/vernotae.asp?id_nota=253414
 # 
 #
 # 
 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
 # 
 
 # From Jesper Norgaard 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 21.st 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 Norgaard 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 (2008-06-30):
 # Unless otherwise specified, data 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.
 
 #
 # 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 # Cordoba 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
 #
 # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
 # Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB),
 # La Pampa (LP), Neuquen (NQ), Rio Negro (RN)
 #
 # 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
 #
 # Tucuman (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
 #
 # 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
 #
 # 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
 #
 # 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
 #
 # 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
 #
 # San Luis (SL)
 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
 			-3:00	-	ART
 #
 # Santa Cruz (SC)
 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
 			-4:16:48 -	CMT	1920 May # Cordoba 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
 #
 # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)
 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
 			-4:16:48 -	CMT	1920 May # Cordoba 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
 
 # Aruba
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Aruba	-4:40:24 -	LMT	1912 Feb 12	# Oranjestad
 			-4:30	-	ANT	1965 # Netherlands Antilles Time
 			-4:00	-	AST
 
 # 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), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ),
 # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (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 Goias 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 Amapa (AP), Ceara (CE),
 # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do
 # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST.
 
 # From Marcos Tadeu (1998-09-27):
 # 
 # Brazilian official page
 # 
 
 # From Jesper Norgaard (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 Uniao"...) in Brazil there are changes in the timezones,
 # effective today (00:00am at June 24, 2008) as follows:
 #
 # a) The timezone UTC+5 is e[x]tinguished, 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 Para 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=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008
 # 
 #
 # 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 the west side of the Para 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 Horario de Verao no Brasil
 # .
 
 # 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
 # 
 
 # 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
-Rule	Brazil	2008	max	-	Feb	Sun>=15	 0:00	0	-
-Rule	Brazil	2008	max	-	Oct	Sun>=15	 0:00	1:00	S
+# From Frederico A. C. Neves (2008-09-10):
+# Acording 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.
-# For dates after mid-2008, the above rules with TO="max" are guesses
-# and are quite possibly wrong, but are more likely than no DST at all.
 
 # 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 Martin Vaz (administratively part of ES),
 # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE).
 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
 # it also included the Penedos.
 #
 # Amapa (AP), east Para (PA)
 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu.
 # The division between east and west Para is the river Xingu.
 # In the north a very small part from the river Javary (now Jari I guess,
 # the border with Amapa) 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 Para (PA)
 # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem.
 Zone America/Santarem	-3:38:48 -	LMT	1914
 			-4:00	Brazil	AM%sT	1988 Sep 12
 			-4:00	-	AMT	2008 Jun 24 00:00
 			-3:00	-	BRT
 #
 # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN),
 # Paraiba (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
 #
 # 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
 #
 # Goias (GO), Distrito Federal (DF), Minas Gerais (MG),
 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (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 00:00
 			-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
 #
 # Rondonia (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, Jutai, 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,
 #	Eirunepe, 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 00:00
 			-4:00	-	AMT
 #
 # 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 00:00
 			-4:00	-	AMT
 
 # Chile
 
 # 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 Norgaard 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 (2006-12-27):
 # The following data for Chile and America/Santiago are from
 #  (2006-09-20), transcribed by
 # Jesper Norgaard Welen.  The data for Pacific/Easter are from Shanks
 # & Pottenger, except with DST transitions after 1932 cloned from
 # America/Santiago.  The pre-1980 Pacific/Easter data are dubious,
 # but we have no other source.
 
 # From German Poo-Caaman~o (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 Jose Miguel Garrido (2008-03-05):
 # ...
 # You could see the announces of the change on 
 # 
 # http://www.shoa.cl/noticias/2008/04hora/hora.htm
 # .
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Chile	1927	1932	-	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	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	max	-	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	max	-	Mar	Sun>=9	3:00u	0	-
 # 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
 			-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
 			-4:00	Chile	CL%sT
 Zone Pacific/Easter	-7:17:44 -	LMT	1890
 			-7:17:28 -	EMT	1932 Sep    # Easter Mean Time
 			-7:00	Chile	EAS%sT	1982 Mar 13 21:00 # Easter I Time
 			-6:00	Chile	EAS%sT
 #
 # Sala y Gomez Island is like Pacific/Easter.
 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
 # San Felix, and Antarctic bases, are like America/Santiago.
 
 # Colombia
 # 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	-4:56:20 -	LMT	1884 Mar 13
 			-4:56:20 -	BMT	1914 Nov 23 # Bogota Mean Time
 			-5:00	CO	CO%sT	# Colombia Time
 # Malpelo, Providencia, San Andres
 # no information; probably like America/Bogota
 
 # Curacao
 #
 # 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 Curacao.
 # This all predates our 1970 cutoff, though.
 #
 # By July 2007 Curacao 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	-4:35:44 -	LMT	1912 Feb 12	# Willemstad
 			-4:30	-	ANT	1965 # Netherlands Antilles Time
 			-4:00	-	AST
 
 # Ecuador
 #
 # 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	     # Galapagos 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 Norgaard:
 # ... 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.
 
 # 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	max	-	Apr	Sun>=15	2:00	0	-
 Rule	Falk	2001	max	-	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
 
 # 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 from 01:00 -> 02:00,
 # and autumn transitions are from 00:00 -> 23:00.  Go with pre-1999
 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
 # 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 Asuncion, Paraguay (2000-10-01)
 # :
 # 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 Norgaard 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 Raul Perasso via Jesper Norgaard Welen (2006-10-13)
 # 
 Rule	Para	2004	max	-	Oct	Sun>=15	0:00	1:00	S
 Rule	Para	2005	max	-	Mar	Sun>=8	0:00	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Asuncion	-3:50:40 -	LMT	1890
 			-3:50:40 -	AMT	1931 Oct 10 # Asuncion 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
 
 # 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 Norgaard 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 Republica Bolivariana
 # de Venezuela, numero 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 03:00
 			-4:30	-	VET