Time Zone Database Release 2014f
Released
Downloads
| File | Description |
|---|---|
 tzdata2014f.tar.gz (226.0kb) |
Data Only Distribution |
| tzcode2014f.tar.gz (169.8kb) |
Code Only Distribution |
Release Notes
Changes affecting future timestamps
Russia will subtract an hour from most of its time zones on 2014-10-26
at 02:00 local time. (Thanks to Alexander Krivenyshev.)
There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky
Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug
(Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast
(Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic
(Europe/Samara) are not changing their clocks. The changed zones are
Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd,
Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk,
Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga,
Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours
subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected,
but not its UTC offset. Two zones are added: Asia/Chita (split
from Asia/Yakutsk, and also with two hours subtracted) and
Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour
subtracted). (Thanks to Tim Parenti for much of the above.)
Changes affecting time zone abbreviations
Australian eastern time zone abbreviations are now AEST/AEDT not EST,
and similarly for the other Australian zones. That is, for eastern
standard and daylight saving time the abbreviations are AEST and AEDT
instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT,
and AWST/AWDT are now used instead of the former CST, CWST, and WST.
This change does not affect UT offsets, only time zone abbreviations.
(Thanks to Rich Tibbett and many others.)
Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UT +07)
effective 2014-10-26 at 02:00 local time.
The time zone abbreviation for Xinjiang Time (observed in Ürümqi)
has been changed from URUT to XJT. (Thanks to Luther Ma.)
Prefer MSK/MSD for Moscow time in Russia, even in other cities.
Similarly, prefer EET/EEST for eastern European time in Russia.
Change time zone abbreviations in (western) Samoa to use "ST" and
"DT" suffixes, as this is more likely to match common practice.
Prefix "W" to (western) Samoa time when its standard-time offset
disagrees with that of American Samoa.
America/Metlakatla now uses PST, not MeST, to abbreviate its time zone.
Time zone abbreviations have been updated for Japan's two time
zones used 1896-1937. JWST now stands for Western Standard
Time, and JCST for Central Standard Time (formerly this was CJT).
These abbreviations are now used for time in Korea, Taiwan,
and Sakhalin while controlled by Japan.
Changes affecting past timestamps
China's five zones have been simplified to two, since the post-1970
differences in the other three seem to have been imaginary. The
zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been
removed; backwards-compatibility links still work, albeit with
different behaviors for timestamps before May 1980. Asia/Urumqi's
1980 transition to UT +08 has been removed, so that it is now at
+06 and not +08. (Thanks to Luther Ma and to Alois Treindl;
Treindl sent helpful translations of two papers by Guo Qingsheng.)
Some zones have been turned into links, when they differed from existing
zones only for older UT offsets where data entries were likely invented.
These changes affect UT offsets in pre-1970 timestamps only. This is
similar to the change in release 2013e, except this time for western
Africa. The affected zones are: Africa/Bamako, Africa/Banjul,
Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome,
Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and
Atlantic/St_Helena. This also affects the backwards-compatibility
link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne,
Tim Parenti, and David Patte for reporting problems in earlier
versions of this change.)
Asia/Shanghai's pre-standard-time UT offset has been changed from
8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
transition to standard time has been changed from 1928 to 1901.
Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01,
then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945.
In 1946 it observed DST from 05-15 through 09-30; in 1947
from 04-15 through 10-31; and in 1979 from 07-01 through 09-30.
(Thanks to Yu-Cheng Chuang.)
Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950.
Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not
10-03 at 00:00. (Thanks to Konstantin Hyppönen.)
Pacific/Pago_Pago has been changed from UT -11:30 to -11 for the
period from 1911 to 1950.
Pacific/Chatham has been changed to New Zealand standard time plus
45 minutes for the period before 1957, reflecting a 1956 remark in
the New Zealand parliament.
Europe/Budapest has several pre-1946 corrections: in 1918 the transition
out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in
1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08
not 04-06 at 02:00; and there was no DST in 1920.
Africa/Accra is now assumed to have observed DST from 1920 through 1935.
Time in Russia before 1927 or so has been corrected by a few seconds in
the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi,
Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and
Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0
point. (Thanks to Vladimir Karpinsky for the Moscow changes.)
Changes affecting data format
A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data.
The new file's extended format allows multiple country codes per zone.
The older file is still installed but is deprecated; its format is
not changing and it will still be distributed for a while, but new
applications should use the new file.
The new file format simplifies maintenance of obscure locations.
To test this, it adds coverage for the Crozet Islands and the
Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.)
The file 'iso3166.tab' is planned to switch from ASCII to UTF-8.
It is still ASCII now, but commentary about the switch has been added.
The new file 'zone1970.tab' already uses UTF-8.
Changes affecting code
'localtime', 'mktime', etc. now use much less stack space if ALL_STATE
is defined. (Thanks to Elliott Hughes for reporting the problem.)
'zic' no longer mishandles input when ignoring case in locales that
are not compatible with English, e.g., unibyte Turkish locales when
compiled with HAVE_GETTEXT.
Error diagnostics of 'zic' and 'yearistype' have been reworded so that
they no longer use ASCII '-' as if it were a dash.
'zic' now rejects output file names that contain '.' or '..' components.
(Thanks to Tim Parenti for reporting the problem.)
'zic -v' now warns about output file names that do not follow
POSIX rules, or that contain a digit or '.'. (Thanks to Arthur
David Olson for starting the ball rolling on this.)
Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0.
Changes affecting build procedure
'zic' no longer links in localtime.o and asctime.o, as they're not needed.
(Thanks to John Cochran.)
Changes affecting documentation and commentary
The 'Theory' file documents legacy names, the longstanding
exceptions to the POSIX-inspired file name rules.
The 'zic' documentation clarifies the role of time types when
interpreting dates. (Thanks to Arthur David Olson.)
Documentation and commentary now prefer UTF-8 to US-ASCII,
allowing the use of proper accents in foreign words and names.
Code and data have not changed because of this. (Thanks to
Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug
this.)
Non-HTML documentation and commentary now use plain-text URLs instead of
HTML insertions, and are more consistent about bracketing URLs when they
are not already surrounded by white space. (Thanks to suggestions by
Steffen Nurpmeso.)
There is new commentary about Xujiahui Observatory, the five time-zone
project in China from 1918 to 1949, timekeeping in Japanese-occupied
Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the
warlord Jin Shuren in the data.
Commentary about the coverage of each Russian zone has been standardized.
(Thanks to Tim Parenti.)
There is new commentary about contemporary timekeeping in Ethiopia.
Obsolete comments about a 2007 proposal for DST in Kuwait has been removed.
There is new commentary about time in Poland in 1919.
Proper credit has been given to DST inventor George Vernon Hudson.
Commentary about time in Metlakatla, AK and Resolute, NU has been
improved, with a new source for the former.
In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it
is uninhabited.
Commentary about permanent Antarctic bases has been updated.
Several typos have been corrected. (Thanks to Tim Parenti for
contributing some of these fixes.)
tz-link.htm now mentions the JavaScript libraries Moment Timezone,
TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up
from Matt Johnson.) Also, it mentions the Go 'latlong' package.
(Thanks to a heads-up from Dirkjan Ochtman.)
The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998
have been removed. These obsolescent US Naval Observatory entries were no
longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.)