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.
Summary of changes from tzdata2013c to tzdata2013d:
Changes affecting current and future time stamps:
Morocco's midsummer transitions this year are July 7 and August 10,
not July 9 and August 8. (Thanks to Andrew Paprocki.)
Israel now falls back on the last Sunday of October.
(Thanks to Ephraim Silverberg.)
Changes affecting past time stamps:
Specify Jerusalem's location more precisely; this changes the pre-1880
times by 2 s.
Changing affecting metadata only:
Fix typos in the entries for country codes BQ and SX.
Changes affecting documentation and commentary:
Deemphasize the significance of national borders.
Update the zdump man page.
Remove obsolete NOID comment (thanks to Denis Excoffier).
Update several URLs and comments in the web pages.
Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler).
Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka).
Summary of changes from tzdata2013b to tzdata2013c:
Changes affecting current and future time stamps:
Palestine observed DST starting March 29, 2013.
From 2013 on, Gaza and Hebron both observe DST.
Assume that the recent change to Paraguay's DST rules is permanent.
Changes affecting past time stamps:
Fix some historical data for Palestine.
Fix times of habitation for Macquarie.
Changing affecting metadata only:
Macquarie Island is politically part of Australia, not Antarctica.
Sort Macquarie more-consistently with other parts of Australia.
Changes from tzdata2012j to tzdata2013a:
Change affecting binary data format:
The zone offset at the end of version-2-format zone files is now
allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthor David Olson.)
Changes affecting current and future time stamps:
Chile's 2013 rules, and we guess rules for 2014 and later, will be
the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC.
(Thanks to Steffen Thorsen and Robert Elz.)
New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen.
(Thanks to Tobias Conradi and Arthur David Olson.)
Many changes affect historical time stamps before 1940.
These were deduced from: Milne J. Civil time. Geogr J. 1899
Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>.
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.
Changes since tzdata2012a:
Most significantly, summer time in Cuba has been delayed 3 weeks
(now starts April 1 rather than March 11). Since Mar 11 (the old
start date, as listed in 2012a) is just a little over a week away,
this change is urgent.
Less importantly, an excess tab in one of the changes in zone.tab
in 2012a has been removed.
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.
There are three changes of note - most urgently, Cuba (America/Havana)
has extended summer time by two weeks, now to end on Nov 13, rather than
the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic
(Europe/Tiraspol) decided not to split from the rest of Moldova after
all, and consequently that zone has been removed (again) and reinstated
in the "backward" file as a link to Europe/Chisinau. And third, the
end date for Fiji's summer time this summer was moved forward from the
earlier planned Feb 26, to Jan 22.
The executive summary:
europe Pridnestrovian Moldavian Republic (Europe/Tiraspol)
has followed much of Russia, and will retain "summer time"
year round (that is no time transition is due Oct 30).
This reintroduces a zone that had earlier been removed,
and so removes the "backward" link.
On the other hand, Ukraine have decided not to follow,
so the change which had been made in preparation for
that in tzdata2011k is now reverted, and there will be
a transition on Oct 30.
southamerica
The change to Bahia, Brazil, that introduced summer time
(following the regular Brazil rules, so commencing this
year on Oct 16 - last SUnday) that was mooted before
tzdata2011l was released, but withdrawn becase the
change was not yet official, has now been ratified.
Notable changes:
* New time zone Asia/Hebron (West Bank), which no longer
follows the same rules as Asia/Gaza (Gaza Strip).
* Several Eastern European countries abolish
daylight svings time and move from +02:00 to +03:00.
