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The 2018c release of the tz code and data is available. It follows on the 2018a and 2018b releases, which were published but were not announced until now, due to problems discovered late in their release processes. 2018a had a build-failure typo, and 2018a and 2018b both had problems with ICU and Java, downstream packages which do not support a feature (negative DST offsets) used in 2018a and 2018b. The typo has been fixed, and data changes using negative DST offsets have been reverted pending development of a mechanism to export data to platforms lacking support for such data.
Briefly:
São Tomé and Príncipe switched from +00 to +01.
Brazil's DST will now start on November's first Sunday.
Use Debian-style installation locations, instead of 4.3BSD-style.
New zic option -t.
Changes to past and future time stamps
São Tomé and Príncipe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)
Changes to future time stamps
Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)
Changes to past time stamps
Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)
A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)
The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.
Changes to build procedure
The default installation locations have been changed to mostly
match Debian circa 2017, instead of being designed as an add-on to
4.3BSD circa 1986. This affects the Makefile macros TOPDIR,
TZDIR, MANDIR, and LIBDIR. New Makefile macros TZDEFAULT, USRDIR,
USRSHAREDIR, BINDIR, ZDUMPDIR, and ZICDIR let installers tailor
locations more precisely. (This responds to suggestions from
Brian Inglis and from Steve Summit.)
The default installation procedure no longer creates the
backward-compatibility link US/Pacific-New, which causes
confusion during user setup (e.g., see Debian bug 815200).
Use 'make BACKWARD="backward pacificnew"' to create the link
anyway, for now. Eventually we plan to remove the link entirely.
tzdata.zi now contains a version-number comment.
(Suggested by Tom Lane.)
The Makefile now quotes values like BACKWARD more carefully when
passing them to the shell. (Problem reported by Zefram.)
Builders no longer need to specify -DHAVE_SNPRINTF on platforms
that have snprintf and use pre-C99 compilers. (Problem reported
by Jon Skeet.)
The build procedure now works around mawk 1.3.3's lack of support
for character class expressions. (Problem reported by Ohyama.)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 97927956a6629381b54973d01e16c5f039f5e5bb)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
(cherry picked from commit f266d17095441dd136c490578d7aae824ab16870)
(cherry picked from commit 1683b26b5940a2514a963d78146b9a591148f73c)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
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LICENSE changed do to rewording
https://github.com/eggert/tz/commit/7097a652778d35acf747d14f8bf7b3ced479bbc0#diff-9879d6db96fd29134fc802214163b95a
Briefly:
Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
A new file tzdata.zi now holds a small text copy of all data.
The zic input format has been regularized slightly.
Changes to future time stamps
Northern Cyprus has decided to resume EU rules starting
2017-10-29, thus reinstituting winter time.
Fiji ends DST 2018-01-14 instead of the 2018-01-21 previously
predicted. (Thanks to Dominic Fok.) Adjust future predictions
accordingly.
Namibia will switch from +01 with DST to +02 all year on
2017-09-03 at 02:00. This affects UT offsets starting 2018-04-01
at 02:00. (Thanks to Steffen Thorsen.)
Sudan will switch from +03 to +02 on 2017-11-01. (Thanks to Ahmed
Atyya and Yahia Abdalla.) South Sudan is not switching, so
Africa/Juba is no longer a link to Africa/Khartoum.
Tonga has likely ended its experiment with DST, and will not
adjust its clocks on 2017-11-05. Although Tonga has not announced
whether it will continue to observe DST, the IATA is assuming that
it will not. (Thanks to David Wade.)
Turks & Caicos will switch from -04 all year to -05 with US DST on
2018-03-11 at 03:00. This affects UT offsets starting 2018-11-04
at 02:00. (Thanks to Steffen Thorsen.)
Changes to past time stamps
Namibia switched from +02 to +01 on 1994-03-21, not 1994-04-03.
(Thanks to Arthur David Olson.)
Detroit did not observe DST in 1967.
Use railway time for Asia/Kolkata before 1941, by switching to
Madras local time (UT +052110) in 1870, then to IST (UT +0530) in
1906. Also, treat 1941-2's +0630 as DST, like 1942-5.
Europe/Dublin's 1946 and 1947 fallback transitions occurred at
02:00 standard time, not 02:00 DST. (Thanks to Michael Deckers.)
Pacific/Apia and Pacific/Pago_Pago switched from Antipodean to
American time in 1892, not 1879. (Thanks to Michael Deckers.)
Adjust the 1867 transition in Alaska to better reflect the
historical record, by changing it to occur on 1867-10-18 at 15:30
Sitka time rather than at the start of 1867-10-17 local time.
Although strictly speaking this is accurate only for Sitka,
the rest of Alaska's blanks need to be filled in somehow.
Fix off-by-one errors in UT offsets for Adak and Nome before 1867.
(Thanks to Michael Deckers.)
Add 7 s to the UT offset in Asia/Yangon before 1920.
Changes to zone names
Remove Canada/East-Saskatchewan from the 'backward' file, as it
exceeded the 14-character limit and was an unused misnomer anyway.
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 77a8256d9cbfe24d470aac9b4cc2910a41ca0ee8)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
(cherry picked from commit 2ea37fd4fad2e5ef21c119b03f09bcf2b0e7266e)
(cherry picked from commit 80dcc2ef7801396b647e2b9fa797fe702d364161)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
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Armin Kuster