Major changes from tzdata2013d to tzdata2013e:
Fiji (Pacific/Fiji) DST in 2013 starts on October 27, not October 20.
Several zones have been turned into links, either to correct errors,
or where the differences were in older data (before 1943) that was
thought to be unreliable.
Some time zone abbreviations have been changed.
Major changes from tzdata2013e to tzdata2013f:
Tocantins, Brazil (America/Araguaina) DST will not start in September
2013.
Jordan (Asia/Amman) moves to permanent UTC+3 (instead of UTC+2 with
permanent DST since 2012).
Palestine (Asia/Hebron and Asia/Gaza) will end DST at 00:00, not
01:00, as from September 2013.
Major changes from tzdata2013f to tzdata2013g:
Morocco (Africa/Casablanca) now observes DST from the last Sunday
in March to the last Sunday in October, not April to September.
respectively.
Major changes from tzdata2013g to tzdata2013h:
Libya (Africa/Tripoli) has switched its time zone back to UTC+2
without DST, instead of UTC+1 with DST.
Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules.
Acre, Brazil (America/Rio_Branco) and (we guess) western Amazonas,
Brazil (America/Eirunepe), will switch from UTC-4 to UTC-5 on
2013-11-10.
Add entries for DST transitions in Morocco in the year 2038. This
avoids some year-2038 glitches introduced in 2013g.
Major changes from tzdata2013h to tzdata2013i:
Jordan (Asia/Amman) switches back to UTC+2 standard time at 00:00 on
December 20, 2013. The 2006-2011 DST transition schedule is planned
to resume in 2014. The switch to permanent UTC+3 is cancelled.
In 2004, Cuba (America/Havana) began DST on March 28, not April 4.
The files solar87, solar88, and solar89 are no longer distributed.
The zones built from those files (Asia/Riyadh{87,88,89}) and
Mideast/Riyadh{87,88,89}) are no longer installed. They were a
negative experiment -- that is, a demonstration that tz data can
represent solar time only with some difficulty and error. Their
presence in the distribution caused confusion, as Riyadh civil time
was generally not solar time in those years.
Majo changes from tzdata2012d to tzdata2012e:
* australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14.
(Thanks to Steffen Thorsen.)
* Use a single version number for both code and data.
Major changes from tzdata2011b to tzdata2011c:
africa
Summer time changes for Morocco (to start late April 2012)
asia
Changes for 2012 for Gaza & the West Bank (Hebron) and Syria
northamerica
Haiti following US/Canada rules for 2012 (and we're assuming,
for now anyway, for the future).
Major changes from tzdata2011c to tzdata2011d:
Morocco does not observe DST from Jul 20 03:00 to
Aug 20 02:00 [2012].
Infrastructure changes to accommodate how the tz
code and data are released on IANA.
Major changes since tzdata2011n:
Chile 2011/2012 and 2012/2013 summer time date adjustments.
Falkland Islands onto permanent summer time (we're assuming for the
foreseeable future, though 2012 is all we're fairly certain of.)
Armenia has abolished Summer Time.
Tokelau jumped the International Date Line back last December
(just the same as their near neighbour, Samoa).
America/Creston is a new zone for a small area of British Columbia
There will be a leapsecond 2012-06-30 23:59:60 UTC.