Changes affecting future time stamps

  Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
  not 06-13 and 07-18 as we had guessed.  (Thanks to Milamber.)

  Assume Cayman Islands will observe DST starting next year, using US rules.
  Although it isn't guaranteed, it is the most likely.