- tz-announce - lists.iana.org

2021c release of tz code and data available
by Paul Eggert Oct. 1, 2021

Oct. 1, 2021

The 2021c release of the tz code and data is available. This is a bugfix release that addresses compatibility problems reported since 2021b came out, notably those reported by Stephen Colebourne. Although this release doesn't address the deeper issues about maintenance philosophy and procedures (discussion of which is ongoing), it does merge in changes to address what Stephen reported was his primary problem with 2021b. This release reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Revert most 2021b changes to 'backward'. Fix 'zic -b fat' bug in pre-1970 32-bit data. Fix two Link line typos. Distribute SECURITY file. This release is intended as a bugfix release, to fix compatibility problems and typos reported since 2021b was released. Changes to Link directives Revert almost all of 2021b's changes to the 'backward' file, by moving Link directives back to where they were in 2021a. Although 'zic' doesn't care which source file contains a Link directive, some downstream uses ran into trouble with the move. (Problem reported by Stephen Colebourne for Joda-Time.) Fix typo that linked Atlantic/Jan_Mayen to the wrong location (problem reported by Chris Walton). Fix 'backzone' typo that linked America/Virgin to the wrong location (problem reported by Michael Deckers). Changes to code Fix a bug in 'zic -b fat' that caused old timestamps to be mishandled in 32-bit-only readers (problem reported by Daniel Fischer). Changes to documentation Distribute the SECURITY file (problem reported by Andreas Radke). Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2021c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2021c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2021c.tar.lz The following convenience links are also available, although they may point to the previous release until the relevant caches are refreshed: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit d2c79c4bc68c02b785990a6d4eb161770058078e dated 2021-10-01 14:21:49 -0700 and tagged '2021c' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 9ed7677744058c58656b47d77d464bad6ef503f2892b53c6abe694e68e73fa123dfc5c11bbcbbb7798f0a6bf1da72b81f8f1c63670839b967e15e58d6d36adad tzcode2021c.tar.gz e8de3a17c38f530b2ec39605699742dd32da5ee92ecf64accaaa5b012a1dac51d1f594adc52660602c3425016520346ab6ad614fa475eb310e17ccdcae93e6ca tzdata2021c.tar.gz a6a86b5b84353c952eec6192222f95f348900dfb414f2dd205fa245515a0f240ba50eab83999f2a5c2cc8e3547406c111aacd96ff9043364d679c86a5e4b0794 tzdb-2021c.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFXfJgACgkQ7ZfpDmKq fjReHA/+LiurpLRdXhwkSuhwUKlAQTKmry3F2/zFyobqi+EEEd7naiJIiQbIlScv aZ0cr6Tpq+oP0L8K0EaLMnz9vvb4qd7M3LLGOcrsML8/z0IigMBaA4c8L/Ep3ACa nsLTKESq6bYUJ2SbaFcCFx4KqwA8UEmfhzrPbNxeb3SVgrI1KwUWkpuTCOpewu+g ZYCVO7mFRhLuaD3wCbErtw9g7vQHyHGPGfTDHyc6lPrEbIaY1gwgl6GwBTmJD72a przvxg/0r0X+ZzHH9GZRQaWSDEGXYUdnIwrnS7zwDNk33WO3VwgLWiX2QMGJwiTe wPku4mnGkRhwQLzG+kJxpWe3DJ9/iKFVvxvS3/5RSN1mnELA6xcGOWMTL9cawlwo RkpyN3bLow/9u3wcW2QSrDhCTlGl5kUeK7Qbi20Rji9q2NIO0zrJ732pdr0PgyCN NeuO0YnHUW0bvGO7IMv0JfhQ+VbjB9yAzOg7D2bR2dSVm++38bR8umI757xU/6sT /CTIpmfP67FsXmtg98PbO6rEmoLr7Y/t+JYi/AwzvoHeFS5CAGs9xnTpdk+dBhjh wjLegKDtLZpIUppH9AkJ/T9MAVsfFpsLa2EnteF3LuYZhFTXzLJj3uo3l6Ji0eMZ RRy1jZAxnZ02EoLRIloezzST4pmxIurepluyzvTXVBBuXcoqDk4= =S2t+ -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFXfJgACgkQ7ZfpDmKq fjR/9g/+LOFIZC6n1xKEMn95PsJx2e+zQ4m2/MG1L1KKZdR6kYnvQHL3hh+dXLdr cKRoB6k4AZDaCl7NZDZ8iKgm0nrXnG4/dVEfVOeJn9VHdRyYZ4sg68Nij0yHheRN fcX/ikKwmVaszwj8t+zTmetZOxlJi1mdLyZaQYgBZuM+8Aj+AnB3QUT00yP3j5xP lZgAToYXyLg8KweHnCuD41ZzU8AmsUU2GSfbTryez5lSGnhTsI+tNFtk5w+2fWZZ C0ZAskT//F2k6viFBozeBoodTs955mPKuzyWte6WyhQOTVUySuaeeAU7Dc9SK1k2 nNMTDeQyR78CL39D/X0qmINAif9YKqQ1k0fJFHH1K+pSbhtw0TaqZarQ7JRQnZpC XSIJ9PwpuLLb4k0pBUWYS+r1bZDWrymmgvDO4uNFRFC8LWR4pKyWZ8k34IYQndaV otWbBcThgyz8JJk5mrf113j7qQ3AYiC/y1lVtBpCXpOy1LzYGSTDUqUoHeib8ToD Q3wD1UTPPlo1nh47+cx/Fq1MasdB4MF/OwX7w33nV7TbYgNOHHjb5ROgf7unbaqM 96rtJDRFXFnnPtDOES3xtF4IEEXeoqx1q6AEEcEBBmkCc+DQk5AvW64JwluKn4b1 XSDP7AuXex+wJKffa/7I2KyNLNiX8aLQcnvVsD9cqV4hComR3O8= =LtLe -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFXfJoACgkQ7ZfpDmKq fjTWQA/9Geo9i7m1YlBbU6xJQFyT2AVTTeCgA3wnQOc7VXj5Sy8/7JBU/AJW4Vmi iaTE+XZJU8ghslbdwkyEwoFcZ+4dT8qtjIDSaJ989LV8zpL0MPjgQPdYnh9egaGo qUQBXBcBzzK6giDut7vYcldf5YbK8AAv/ApvVyqL9JjdjbE2P3/juPAHUBUTxHIl bGrnRKbXIeqHB2MGgNZcby4HyblR+BCue3r9kN7Jq0kzETHG8UDeEDeHpL9x9DIq QIYpCiiuMvT7FZR4vNlQg5oBm6Tjz47BEWlvpDQcZHSAgXVrMOTds7uameG72DRW TtEGbozg2LQS3RKHn9mN0GK505d/qiSgrR/AoP420g6xa7d49Orz5qTcE4hUUqQ6 /YA2/3LqqCXeNep/BjwDvsvSTN8TKF4y0iF26Ie2BWRCnI377tT/76NncWaXRT3f k4X2qdIu/6EGle9kleanIZvet3/yavwpOXpgjcMPBwa1RoZDcH2/YSTd0uFhBXLw FTgJ2LKU1d7HVn5VR3t0z1ltjTjv5kjAt+/E/xdANN/vY27ef6yOMp9Mq4z3Pp9Y cUtwwM0aXchlCcomOhoKOShW/j8hFFlIX3pEEAQOhvDS4t7zw0x18+737Fi5diY6 5GUcyKs0sgIkGcAco1qZXd6vvR61ekq7rgMANpi8g9H5igjt5TM= =23yb -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

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2021b release of tz code and data available
by Paul Eggert Sept. 25, 2021

Sept. 25, 2021

The 2021b release of the tz code and data is available. Partly because it's been so long since 2021a, this release has many changes, noted below. In one area, noted "Merge more location-based Zones" below, the mailing list has had significant trouble coming to a long-term consensus. Because we should publish something before the Samoa change takes effect, this release contains just one step towards making tzdb fairer and more equitable in future releases. This release reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Jordan now starts DST on February's last Thursday. Samoa no longer observes DST. Merge more location-based Zones whose timestamps agree since 1970. Move some backward-compatibility links to 'backward'. Rename Pacific/Enderbury to Pacific/Kanton. Correct many pre-1993 transitions in Malawi, Portugal, etc. zic now creates each output file or link atomically. zic -L no longer omits the POSIX TZ string in its output. zic fixes for truncation and leap second table expiration. zic now follows POSIX for TZ strings using all-year DST. Fix some localtime crashes and bugs in obscure cases. zdump -v now outputs more-useful boundary cases. tzfile.5 better matches a draft successor to RFC 8536. A new file SECURITY. This release is prompted by recent announcements by Jordan and Samoa. It incorporates many other changes that had accumulated since 2021a. However, it omits most proposed changes that merged all Zones agreeing since 1970, as concerns were raised about doing too many of these changes at once. It does keeps some of these changes in the interest of making tzdb more equitable one step at a time; see "Merge more location-based Zones" below. Changes to future timestamps Jordan now starts DST on February's last Thursday. (Thanks to Steffen Thorsen.) Samoa no longer observes DST. (Thanks to Geoffrey D. Bennett.) Changes to zone name Rename Pacific/Enderbury to Pacific/Kanton. When we added Enderbury in 1993, we did not know that it is uninhabited and that Kanton (population two dozen) is the only inhabited location in that timezone. The old name is now a backward-compatility link. Changes to past timestamps Correct many pre-1993 transitions, fixing entries originally derived from Shanks, Whitman, and Mundell. The fixes include: - Barbados: standard time was introduced in 1911, not 1932; and DST was observed in 1942-1944 - Cook Islands: In 1899 they switched from east to west of GMT, celebrating Christmas for two days. They (and Niue) switched to standard time in 1952, not 1901. - Guyana: corrected LMT for Georgetown; the introduction of standard time in 1911, not 1915; and corrections to 1975 and 1992 transitions - Kanton: uninhabited before 1937-08-31 - Niue: only observed -11:20 from 1952 through 1964, then went to -11 instead of -11:30 - Portugal: DST was observed in 1950 - Tonga: corrected LMT; the introduction of standard time in 1945, not 1901; and corrections to the transition from +12:20 to +13 in 1961, not 1941 Additional fixes to entries in the 'backzone' file include: - Enderbury: inhabited only 1860/1885 and 1938-03-06/1942-02-09 - The Gambia: 1933 and 1942 transitions - Malawi: several 1911 through 1925 transitions - Sierra Leone: several 1913 through 1941 transitions, and DST was NOT observed in 1957 through 1962 (Thanks to P Chan, Michael Deckers, Alexander Krivenyshev and Alois Treindl.) Merge more location-based Zones whose timestamps agree since 1970, as pre-1970 timestamps are out of scope. This is part of a process that has been ongoing since 2013. This does not affect post-1970 timestamps, and timezone historians who build with 'make PACKRATDATA=backzone' should see no changes to pre-1970 timestamps. When merging, keep the most-populous location's data, and move data for other locations to 'backzone' with a backward link in 'backward'. For example, move America/Creston data to 'backzone' with a link in 'backward' from America/Phoenix because the two timezones' timestamps agree since 1970; this change affects some pre-1968 timestamps in America/Creston because Creston and Phoenix disagreed before 1968. The affected Zones are Africa/Accra, America/Atikokan, America/Blanc-Sablon, America/Creston, America/Curacao, America/Nassau, America/Port_of_Spain, Antarctica/DumontDUrville, and Antarctica/Syowa. Changes to maintenance procedure The new file SECURITY covers how to report security-related bugs. Several backward-compatibility links have been moved to the 'backward' file. These links, which range from Africa/Addis_Ababa to Pacific/Saipan, are only for compatibility with now-obsolete guidelines suggesting an entry for every ISO 3166 code. The intercontinental convenience links Asia/Istanbul and Europe/Nicosia have also been moved to 'backward'. Changes to code zic now creates each output file or link atomically, possibly by creating a temporary file and then renaming it. This avoids races where a TZ setting would temporarily stop working while zic was installing a replacement file or link. zic -L no longer omits the POSIX TZ string in its output. Starting with 2020a, zic -L truncated its output according to the "Expires" directive or "#expires" comment in the leapseconds file. The resulting TZif files omitted daylight saving transitions after the leap second table expired, which led to far less-accurate predictions of times after the expiry. Although future timestamps cannot be converted accurately in the presence of leap seconds, it is more accurate to convert near-future timestamps with a few seconds error than with an hour error, so zic -L no longer truncates output in this way. Instead, when zic -L is given the "Expires" directive, it now outputs the expiration by appending a no-change entry to the leap second table. Although this should work well with most TZif readers, it does not conform to Internet RFC 8536 and some pickier clients (including tzdb 2017c through 2021a) reject it, so "Expires" directives are currently disabled by default. To enable them, set the EXPIRES_LINE Makefile variable. If a TZif file uses this new feature it is marked with a new TZif version number 4, a format intended to be documented in a successor to RFC 8536. zic -L LEAPFILE -r @LO no longer generates an invalid TZif file that omits leap second information for the range LO..B when LO falls between two leap seconds A and B. Instead, it generates a TZif version 4 file that represents the previously-missing information. The TZif reader now allows the leap second table to begin with a correction other than -1 or +1, and to contain adjacent transitions with equal corrections. This supports TZif version 4. The TZif reader now lets leap seconds occur less than 28 days apart. This supports possible future TZif extensions. Fix bug that caused 'localtime' etc. to crash when TZ was set to a all-year DST string like "EST5EDT4,0/0,J365/25" that does not conform to POSIX but does conform to Internet RFC 8536. Fix another bug that caused 'localtime' etc. to crash when TZ was set to a POSIX-conforming but unusual TZ string like "EST5EDT4,0/0,J365/0", where almost all the year is DST. Fix yet another bug that caused 'localtime' etc. to mishandle slim TZif files containing leap seconds after the last explicit transition in the table, or when handling far-future timestamps in slim TZif files lacking leap seconds. Fix localtime misbehavior involving positive leap seconds. This change affects only behavior for "right" system time, which contains leap seconds, and only if the UT offset is not a multiple of 60 seconds when a positive leap second occurs. (No such timezone exists in tzdb, luckily.) Without the fix, the timestamp was ambiguous during a positive leap second. With the fix, any seconds occurring after a positive leap second and within the same localtime minute are counted through 60, not through 59; their UT offset (tm_gmtoff) is the same as before. Here is how the fix affects timestamps in a timezone with UT offset +01:23:45 (5025 seconds) and with a positive leap second at 1972-06-30 23:59:60 UTC (78796800): time_t without the fix with the fix 78796800 1972-07-01 01:23:45 1972-07-01 01:23:45 (leap second) 78796801 1972-07-01 01:23:45 1972-07-01 01:23:46 ... 78796815 1972-07-01 01:23:59 1972-07-01 01:23:60 78796816 1972-07-01 01:24:00 1972-07-01 01:24:00 Fix an unlikely bug that caused 'localtime' etc. to misbehave if civil time changes a few seconds before time_t wraps around, when leap seconds are enabled. Fix bug in zic -r; in some cases, the dummy time type after the last time transition disagreed with the TZ string, contrary to Internet RFC 8563 section 3.3. Fix a bug with 'zic -r @X' when X is a negative leap second that has a nonnegative correction. Without the fix, the output file was truncated so that X appeared to be a positive leap second. Fix a similar, even-less-likely bug when truncating at a positive leap second that has a nonpositive correction. zic -r now reports an error if given rolling leap seconds, as this usage has never generally worked and is evidently unused. zic now generates a POSIX-conforming TZ string for TZif files where all-year DST is predicted for the indefinite future. For example, for all-year Eastern Daylight Time, zic now generates "XXX3EDT4,0/0,J365/23" where it previously generated "EST5EDT,0/0,J365/25" or "". (Thanks to Michael Deckers for noting the possibility of POSIX conformance.) zic.c no longer requires sys/wait.h (thanks to spazmodius for noting it wasn't needed). When reading slim TZif files, zdump no longer mishandles leap seconds on the rare platforms where time_t counts leap seconds, fixing a bug introduced in 2014g. zdump -v now outputs timestamps at boundaries of what localtime and gmtime can represent, instead of the less-useful timestamps one day after the minimum and one day before the maximum. (Thanks to Arthur David Olson for prototype code, and to Manuela Friedrich for debugging help.) zdump's -c and -t options are now consistently inclusive for the lower time bound and exclusive for the upper. Formerly they were inconsistent. (Confusion noted by Martin Burnicki.) Changes to build procedure You can now compile with -DHAVE_MALLOC_ERRNO=0 to port to non-POSIX hosts where malloc doesn't set errno. (Problem reported by Jan Engelhardt.) Changes to documentation tzfile.5 better matches a draft successor to RFC 8536 <https://datatracker.ietf.org/doc/draft-murchison-rfc8536bis/01/>. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2021b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2021b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2021b.tar.lz The following convenience links are also available, although they may point to the previous release until the relevant caches are refreshed: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 9ffa3f6e5019dfa7cfb5c0e4e8a84fa95adec704 dated 2021-09-24 16:23:00 -0700 and tagged '2021b' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 00fca7508cfbc42123065fe8087397c9dd2acbdda96f3bb0936187825348cf13538f1893f2d02bd8bfa3465427ca7a9a65451baffe39889bc58ba0a77a047806 tzcode2021b.tar.gz ca61d64af5ae791f337533c09d2b4f7caa645ecab7b9d13e9bcafc47c7c68535abe7c103c56bbd41d6bd913a8607f9c5187c8ce8a91b4891a750a643f89c8b51 tzdata2021b.tar.gz 326fb99666c8d5bb798a9c24d2869307620dce918d47fbedd7f765c91eb35ea44bf776f43cb00cde1944884150232ac6dcdc0194a0364e2d28f6470691cf9177 tzdb-2021b.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFOX/wACgkQ7ZfpDmKq fjRKwA//RVH1mmf13Uz99KBQZMc/meVaYT1YSpMqilocZo1w+i+Omai7Aw/r9u1e lnwLQukqjpCH4TJWdq8VuloL5ojN1ImoZuIRYECWRHOShxMaS9DLkPRr4qA9Fxic hladneiIglVrnzQbG4pH0Vnu9Qakb6I+1um8lCNiJHng84y5KAOIcZu1m9O+A1F1 bdik8Ddxc4qBluUvcq9n9aqWSgDBvIyCYik6bOo3lOd5zP1rcjSr8VJ+15cAkH4X hU/igj9qloyqAmoOyJOzIIwv63T3Xg63rH/V2hJWyux54ayP4Kt8nZqLYA9V8gFI V/HL5qNafSYEqguO2H3hTwURc3Utini8Oa2Ou89Ih0hkO+nySacc0ZnhaunmX7Ip D5Oj6A8kssG0Uj5fZqpqUp1FeRbziAinSdwTOpRxdkdeHI6tfS0XVnRvRiFATfTu oh9107e3okwKAb2UPJtr8Oev0uU8rz8+EorN9/PqJv0n2c3I69NUv6TudFVHM8uB lwG3hUNtWWYpK/rzwX8AQkwTrOHMN3VJ94T8xaTm13/jtk6R/+GgSjXKC2C9XZG6 5uvi6et06WnRVRO+V5TwnQdfY85pe5nqRDLeo0clxdkAvx6fslLpz9YNacLV/Gn8 0UIGt9CBKjE+PU1F5w+O/5btA/1aTojuSpKscdzgQIzXTfDlTZo= =+McC -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFOX/0ACgkQ7ZfpDmKq fjRYmg/9H3rMpV7uQdd+G2K0wybdzTH6vJiNQClWE1+wqCPh/L3e8kCbPIjSo7MF SFV/Pu4EDb9kjeA2ruEMYlLnpg5nTP7dYfFRsRDcQJ5Yw70luNImm1ipUkKr9o5Q oQqYFKzxvB0G1rE+/gMaxmCHtGaJnv0DEChhmAS5U4j48z71Fn3+UJIU9XPEaODD U1Fw62xDsxIlFKjZ9UvilhlVRMnnP5nK9hjrsFKn7OGbxYvkdaRoK5f3M+G5nGXh L9nZcE0cd/7zhD3+wlttcH+xw3b+5P+7sxMhucoWQXEl3KyIklh97fi7jzHBHz+s DRYLZv/yPoEp94QyCfaYdvWL/i4OX4/9YnXK3ruXDcEV2y8Zl7Wc70Ihxk3I2XAb S4YeMcb30uls93QUdSmuhpEEUWrS5e45OnPy9RnT/VnpCalxsukudSNRzuvivKZn TsPpf90VUtI9ncLZ4l7OoNVXSj5pJ6DS+V1nCesEQyfyFnFvgK/rogCZ0yt+Cosp zaXwBtGyOWwWsGgXHGdJoiQqt/FF8o387EL95vpFr9BRSdSQoKd6K9RrRIH9fuy/ nnpaksD86fx+WbdLMtbHzsZgCqL1RTGO+kc35Qlr3vqH02UAZiwC9l3DHS9SA01c MGDy9zaiLsL/8/lUV3AP31dEP1+DY+BXvdFhIJkmIceBUf7zl0E= =PO3W -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFOX/4ACgkQ7ZfpDmKq fjSaPg//ZlKREhlxjnstpEl6W3x4sStpUrF/Kebp62txYoCjbK22EDnw4BbE0wFh BcIBGbfxioC2+1gAjG57LK0RzTqFPPuDA69qYIZFk+xLrREISDqrGHViLGkFEgm5 jEDamuGW59UoBdnu4Klp1JAd7hvYQYEbbVaIVsrUlAL99OTyujeA6QoZdIjM43eh jx4g1P/XuHBqJEH7d9kOM5tBCRvgFhhcu/s4vOvrfFibRHRimYBuPlep5nJ88bb/ UyCQ1oYIQucWtl+DOszICl/GTmuM33FMTeAX6OrlGxwON6KPI2qNzAaQVpK1apB/ qF9dTnOVP8pygW6HkiFwNOKx4mplB2V8f1eqLT9mfdOQsEWPRuDyUvejBIr/Hmww jHF1w9TX8FxND2KQmcfZNTlKqYcw1O8Vz4m+0UnDzNuLiZAsnTBTrfnKMnVrTOFt 1K6KKK+v5y4WYu+pE36cIBM2YxITEpD+YrRr7G1ilzVgRH5FRGCJsxJu0O+BO35z rv9qVnJz0xISMJs+qSdJT8v4W4Uc6+crnHjAc7T7eAin3i3y/GY/MA44isCACmhx +Rq165laaHXnqTOgQfHhGjigJoH3JCnDYUwg6q+fMMBU2eALkOs+IbgdfVB3hoyo UOlYH/A25nuI0PrRgUKsN6N2lrfPjq3bM4twDw33BOyGJ/LN88w= =aNBd -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

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2021a release of tz code and data available
by Paul Eggert Jan. 24, 2021

Jan. 24, 2021

The 2021a release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Changes to future timestamps South Sudan changes from +03 to +02 on 2021-02-01 at 00:00. (Thanks to Steffen Thorsen.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2021a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2021a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2021a.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 336c8f8262e31116878b079abba80b1626baaa8f dated 2021-01-24 10:54:57 -0800 and tagged '2021a' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: bf1d53bcbfecd3b09d57a9e6d3cb49b5dc5f8e1b6674b67e7f974e1a268c2aaf13ca89a7ef12f49d0665aff782bd72685e00c22a41ca88a028da0429f972fd45 tzcode2021a.tar.gz 7cdd762ec90ce12a30fa36b1d66d1ea82d9fa21e514e2b9c7fcbe2541514ee0fadf30843ff352c65512fb270857b51d1517b45e1232b89c6f954ba9ff1833bb3 tzdata2021a.tar.gz 1878ec039db73d3255d808e2b28a5acf2b384d4c5d178aaa2048b5b73cd6b34d03c2ab7282ed615d286b695fa46c628d7e4b6fb6f84bf1905ac8dfbb740769c1 tzdb-2021a.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmANxdIACgkQ7ZfpDmKq fjRy5g//Y/CPFNFyrlCJSvZT8pP5f+qGfntGfUGEXBJRdFNmGW8KU/wRLHrK+mEP 8VQgPKZqYaKQwJvVTrDycs96Ntm62sKbzb/tSr04JvxYYcJa4ecvMISI8ePI/M9m sKNoKLDuok/Dnl9yntvDWFjLkw43TBMqZRj+oXxMz9Ui8Cap4iZFZfw+tgedwjUk 8mkd45xLQJ5D9k9K6bXvgy0KIFvhN7+Td16do94QHx86gaiSwgzey81rqetzHisb fj329dq2xMa+5bKxS8QDfbL05HOrxQBKmgJQNl2E7MvonBbXAjrd56FQJjGkaViM cTwhQecrElm9bPIzNduV2zy6CyE+5ZlQcYrUJ73g4pH1kZ7H4S5UdIL0O8sdcDOW Gjj0xUMGdwUpI0k2VkKvMjKQ1LzT/vKZy0S4n2LlHTOtIifUA5SigQ1tPmQuWwW+ XfbDb2reeq1mUzphHvwsakKOSPRfwVeszfN4lgOmh3hOpPvEEkzEhQYVOKYwBvEr sK+zl0a+c3ePOMioC9uUF56B38bRgVcTojA/suaoMJEH8IE8wLBT4dSEjofA0wya kKVpvHZiwTj5mM7bMVgq+gtvaQprI52k/X6HWcBD4CcL0dOMQswmz8Sv2LGd7IFK oFm30G2vBVIzprcKdeezYU83EAeUnASbDt5kPm5PCnzELmgRu4E= =pUNC -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmANxdIACgkQ7ZfpDmKq fjTnYRAAnozc58/XHxdZ92os3TIzGZHDt4jWZt7zeSlzag7C9r0pvq2u0K0AZVPG yGMUpNlFm2fcbks65En8+wRVZ/5AJeEkUA4V2DDMlf5yDtiXZyt42YTu0UL/saZ3 wHEZIPySeZWKdUILp9BTD9ZDmY2VbIceL1PGMfs00Ti98UgmsNG8yJPMD2E86T3H dcsx7kTYFou9KYuvm3GDlxrQO7X/sTVVEnWJF7Z8rLQz4wjPnYn6Lspoav+N0HNR ycRXSADS3c2kjlaeRjjYVKaekJ3oIXvWgfXcYb1CcB59bACDi4HOMvd8kMU/PV5R p7lkZpSvSNNy/5j5MJDV79YVBwas5++yjv8bQZPkDnS/1YvW9I8ca4YYeTGEA1/G 89sysUlUEYzuojs+oApgqFFAwl+Eo0y5MLyOuRxcXgWw6+eTW6oHHaUXLDFq9jwR d0biMlHIFZNyKHZ72dUbSLo8FalHspHdRYBCppwU8cCprJlPc43zuljru86jRYuW jr228IpKq75ngtXbOHexVrnJejCp/NuV3rcfP3FjC2C3HC2Ao95FO9xT0ZlcTpXq +wu2wZ8csf1RO/hzyOHtcpuFZBRL5a4ZQNvqydFgMgfx2oZcSIAz3GmA8qt5BjHQ C+JwBd00A4JvOigUMvprSSvu3OEOv2kCLgAQSJPOSGWbkrr0s08= =5dc0 -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmANxdQACgkQ7ZfpDmKq fjQKOg//RWKxqgAHjfiurbEV8E4KJfA1FCN9lnj8Yd0y5r7QXmABKpJvTa//oqy1 s6OvcAlw9KtBx69F5AR8O3/cJSK8ITKTApoYBDoOhPxBQBYkWAg5tM5Eajv0nOlm HlsnKi0jR/vTyDEhBl4XX/dqzcQF0qb0dmdd+Bm5aB3VjeYC5RlebizT5BHEjTtB 2kw/fkoWYt9r9x+drLwTTDeKB2P7PGZiiOsru5sReWJd5liH/htgC9oC8j4vmbKC BnAFAoRtOYiazAJmyc/da4PJXHEBPnsL9iBxGLR265kkn6rg1v+SJhsBQm5Xj3Ci zwDsX4+93Uk2ezU/Eyk+zvIhKIWWWjcSdWa4zVjLROBvX9jQ1xBSFcTN1mBXccEg pbu9U29qISOY11RqtenC++1KXdNFlLdWiNvuLNNYmSRPOVSyfz+h57wkXqj3zlSS MAH6xGdIGH043pofOgmrVkgyywJ8C195ajmgjQoG5CxCf/o1YgBgoJyd07xPZlEv D94ZShvuXMDHtQ7eJOoFcVTOcIRj5WvEmxxup4eEDmFULOQ2RrVphYTkpVApp5ks kQVPxDkANq7cNwBDokuzV9cDX+ScnSEMs7k79TMB1S2szuM/W8g2ZTN2wwQoZq4T 8QMKHQPMTU72IesC38+bn7V2dHxR14jT+tpjVZc3FsguILd7Ev0= =o/OB -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

2020f release of tz code and data available
by Paul Eggert Dec. 29, 2020

Dec. 29, 2020

The 2020f release of the tz code and data is available, reflecting the following change to the build procedure: 'make rearguard_tarballs' no longer generates a bad rearguard.zi, fixing a 2020e bug. (Problem reported by Deborah Goldsmith.) There are no changes to the data since 2020e. The build-procedure change was circulated on the tz mailing list and is intended for downstream consumers that can process only rearguard format. Please see the PS at the end of this email for more info about rearguard format. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020f.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020f.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020f.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 846c3ac7abc246094dd754ac6dc90423148a5107 dated 2020-12-29 00:17:46 -0800 and tagged '2020f' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 5f6bf1b508434842eb9dacacc744b5f3375c35b88e401ef372b5fde80ad2f523484fe52a6e99460e402230406ebf6a9261a97efde45a610f8e8085893d55c4ed tzcode2020f.tar.gz dd312def18c807452fda2e697514e2064c5f51ebdbedd0cfe6f231252c76ee5d4409f653b295ed5657b7d30b868690047fdb70a10942e69eaa40b77473e3f9ca tzdata2020f.tar.gz a2efd9cb6308c75de382ff1ddc524dad5da10d76d86c6bf41ab2f979fffae1356b2599b3fcc045eab1cb56b16f9371663da5be57c1f43591517be62e65abbf1c tzdb-2020f.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/q5ukACgkQ7ZfpDmKq fjSOqA//d2SuaDA9HEXuGXOgTV2f9Iu8x4XF3cIc/UYIh/9yi7T1jVhRD70rPjTO 0g1ohBPoT/oY5OaFholMuZfoIwNgPv2K4c05xNrmNdbbz/3iaddm1zpD5WutRw2c u+hqrR1C5p/ICoSEH+/SAwmBFYEpQYCnkFUScC7YeGoZzzpKls3l/8hvUFaKt8SW ssgS/nVA3L54W8Hdu8WUl2Nz7xmkN3zzRseZMsU3+CrUwXtGzyySZPAJR1Ryk1ee PgwZaoteeGFl08Y7QfvyZBc7xakgnMEdhFB+m2SH//RO6DLjjuWlSAV9wMCk6dZq Uu3yZDVfsV91kiXOavdZFGXQCGXFVmkU7cZnSlpGWuIQGDX0iLOdcuWTFSEw+Av6 UP0cKyX2gJdXaqsYaBpgkCNh0SzG8ui5sS+vimCXG0+0d3z5ru2sHOTSkDxAke6a Jbs5PCz4HXpkIbbE73j+GzaoGWvbzqIledXV+J18uOAcfX13Ejft1nMFyZYh2vvJ 3DH3j1KA0NMs1u9o2F3HWPQcGZKuLFg0BxU2hEeIqbEwXAs980Mo5xrDtFRk4VLy Sg/o6XiREeXV06gXLqlP0vKa+qf88J9u18wMuuiPX1NmNZOcdekVVZtYQ5VhDjbZ xcg3S7YG9HUB+SxnAWQ21jaioQPLYB0Sc2/2vo8VzvIDE9iy8FI= =WeIr -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/q5ukACgkQ7ZfpDmKq fjQ8ug//WH7DpYFvSYMKpSj6gG0m5lK0JXcs062EKGQNsVoUjSVImu3VPbpUS9tu cO3NCUmeqTmwhUOuZQN2qGAT2KyNhcLTlza8xuRQm/tJ7SYpArseY9rudQtkjbCi uWELQi5+a6CA/PBBRJzDJwQPTf4wDZr24vDd29tKqBho5T5cisudXHhqh1Bm0Bfr NPyPsS6+oLJofIVsU0I5V+fbnU98ny5I1r/OyVIJgAlvEcb0kMDr0fBfu1dNvJI9 Tyl3kvdLSMCgf/lRXEFYJpI0RuUeIAsOvHaSwSCHKGc7FHzgDiK1U5D/4z5Ipo02 0AQKkLFkEbzwou/5KtX2Q3+yba1AGu64C7elu+aKepUNGhkzAaJrl2xNNM25Sdn4 1WvxOt43GTIze0cr9UHm942sU5UxH0ahv4h9pEbqJ44UVzBhuDDqcMXYJEWhdhMf 6dgRA7SJThuX7tN758to9Ze9XyXMdzAPdJKs/wyLrRGyDq0dXlRTVPL4Nk9ZqRQh FYJlOhM2TGSg7VsNgn8gneODaaQJpJ7jVSIwicQtWES2K2oblrFz4LSeXm39xZDc 0JRNh/fSeRygCGrjD7CLqq88UGTxhEuZbEXKXSPMLC+7j7JF/CmCVj8HjNw8M3Cy uk/Tfamala66AGltxPwKchTPBJH8F4tZy+4krfYXByoIX5h+Ta4= =Fk0g -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/q5usACgkQ7ZfpDmKq fjSp4A//aoSQ/VDoYZhE5F7PXV+td9DTVGABdA6ubQppymgX8uJvuBgk46pDRmVw Yba4dVcblTzjbCNDCBf9+nkgj46hGdql10t9bjgBDKf5MVQwp8hDyQfj3qbJciBD E0JSMXw3JQpuK1YVqxTXldINxtaSaLJUhYh1inBmEs8uX+vrwzURmYhF7NLoG7GL ymClE3BAJwkNXuRJ4tAMhEaANdShnre+uJWWW7DeNZPrHVKhSSD7IyAWin3vNUEj FA3ELERWgTVbkpmsUUH+5VtUIp8dE9jGxzgaPfy4KmuN0D4qiEgjSg23AFZDWqwF jDX2OlQl7J9oQfeUUBooee1S6IkVCC0+WNJPhSjeeKV8CUBBT5YKtTAgnx14bgkc nL01dF49WxA2MrQMWd794jh6dpMwDzdWw4gdEMLoiSOKRpO5E5iHzjM7c0WWyrGl Hqh6ZmBZz+17wBFSd7QQtLpwWajl+yGgSONJcw0cnvdjleJ6m89vcdzsrsD55ONT uRZK1TEaZqYG6U6lk/XxDsVQiC1CQ9/vWOPT8bhd2wdIhf9g0skN+MNachKQfs11 9Xn+pfMk79Vgatbbq9rDk0F3v6gRjayYRDtcVCFoOmrdXWmRhQtvyerm6wCILsFU gWpdS8tIo/4dwbypyot/5fe0ZEUBJGfbe7PSZu7a64DTgecE5R8= =mWt8 -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

2020e release of tz code and data available
by Paul Eggert Dec. 23, 2020

Dec. 23, 2020

The 2020e release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Volgograd switches to Moscow time on 2020-12-27 at 02:00. Changes to future timestamps Volgograd changes time zone from +04 to +03 on 2020-12-27 at 02:00. (Thanks to Alexander Krivenyshev and Stepan Golosunov.) Changes to past timestamps Correct many pre-1986 transitions, fixing entries originally derived from Shanks. The fixes include: - Australia: several 1917 through 1971 transitions - Bahamas: several 1941 through 1945 transitions - Bermuda: several 1917 through 1956 transitions - Belize: several 1942 through 1968 transitions - Ghana: several 1915 through 1956 transitions - Israel and Palestine: several 1940 through 1985 transitions - Kenya and adjacent: several 1908 through 1960 transitions - Nigeria and adjacent: correcting LMT in Lagos, and several 1905 through 1919 transitions - Seychelles: the introduction of standard time in 1907, not 1906 - Vanuatu: DST in 1973-1974, and a corrected 1984 transition (Thanks to P Chan.) Because of the Australia change, Australia/Currie (King Island) is no longer needed, as it is identical to Australia/Hobart for all timestamps since 1970 and was therefore created by mistake. Australia/Currie has been moved to the 'backward' file and its corrected data moved to the 'backzone' file. Changes to past time zone abbreviations and DST flags To better match legislation in Turks and Caicos, the 2015 shift to year-round observance of -04 is now modeled as AST throughout before returning to Eastern Time with US DST in 2018, rather than as maintaining EDT until 2015-11-01. (Thanks to P Chan.) Changes to documentation The zic man page now documents zic's coalescing of transitions when a zone falls back just before DST springs forward. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020e.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020e.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020e.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit efc5c061920f1d5820d66b7ec88ebff144c55b3f dated 2020-12-22 15:14:34 -0800 and tagged '2020e' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 37656ee4400f6e7ac8b3d4b515ea2ae940de05e8a95873112a4ec08afc11227214f269e4ef1bedb0389497958dd07a6d4721191e441920bc45c235b029a8a885 tzcode2020e.tar.gz 1e64b5c91b9e56923cf8e3e079781c59c8afb6c379b38b9b91ef493929814d50c29a6368cfcf77db08a7af3b6876387bac5617f64ac965a5bddab436d17862c4 tzdata2020e.tar.gz 77e62a3717d179b13f35710dedd87d780649edf6c338c056e41ba58d49225e512074a5fbfa3ae52242bea6b28d1a08bb0e2b07ff7a3aed031dc9d357dac34170 tzdb-2020e.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/ifpwACgkQ7ZfpDmKq fjQrYA//Z3ky92YK4p8GAejA/69W92B2n+uATB7YPOVJXjWOieo+nmlJihEaY447 bxsLfrExy/AwM5wUoqu9JPQmjUGQYxQR0MjIdpzLeWNCGx+NM8n2j+9K00VXxIXX 356rhSNclm5a/1AmkeeDeYK1C8Fw3QIQnaqeTMHDZ/Txv2UncAMshHR2P+9c2i/k N5A+XK0X3+YNHs/0AHbFobRonynw68cogTeSdslMxFtjWV1iTNNR7c8hHHCDXMgJ sjF7hJ7d6RHBRDQn53XgJdR/OKPaj1RJXncP1Be9j6J1M5wepkHJFVS7/66dDl+g 7TyimxnE/y5gxNVk1JWF9ssz31ksGBRbwq1P8IdF3/EsNF3tTB3eqmKM7PB55Oiu k9MWSDo5/fjfdhH24oYUhocJmMN+n2iiBjAh+mWOq1KNPBGtugbztSZPNXuHDHn9 vsAVuuOdK7FvZcbzE0kMqh3gCmp1YBPcXUSnlqLGaowwlykfoYYR0MGz8AdvJreE 5Su2wfiPlI/B2zvVmJ1i2LFr+9nfVFWlmXGAwFmHunpEKTHB9b0HKXVdsJL9qZC2 Gm7SXPMzHEjZ1G420jT8Bx0qfGLC62jTq98QSK6BdcfLd0AsU+rstmQviFZOtSAv qEPrAXPXUraEwMs2/dR+eXR0DWQMEbUWgtmxJM3jHOGnWRseAQc= =xaDL -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/ifpwACgkQ7ZfpDmKq fjSC+w/9HzW/PbI7gfxfbPkF0fCyHCl2OWWrLlJi1m0G72balJ+BmkhI3vvnBGwK 3OKhvN/HOxA4d11JpXiYmPuQ7iuCDO8nRTDWbtg5nuEdP3FOJqUBD0HKDjTg/UUo haXoFxJwPklPqGOiIsFklEQWgVwpN+LwZkL7b2yjjadL0k5ukx6z/G2lJ5qF2i63 f3Gbe/oG/UYd3ERlDpjvgn2tJWfmoS0S3qU3Y9TpraL3NrmunnbtIFDW7SIEM2oP W4XmtkNgBQGlHS1/x/vocNo31h6KyzqVg6OSyvk88Fzp8vE+gHGOVTLR2RdNh/0H NQDi+Pj65KlIJUsjcLmZo+Huv+eNUfzwBcG+LGwUhay0q+2kaeGTs6epohYFNZen A/0/nzXJBohqcBnbLcBYVf+AZUHuPs5lTkG3OZpdRSvkmw6lELlJbBQMEf/HP/kG l43x9DEe0Dr2oDIEr1mfjszFJqKvSg43QJnTgUJtd0SqITazC1N9XuIZj0uXJ64g zfC1aByJ1FLNJmkMDKbl+OzVg7o53sS2gzL/EaGp43NeOPVa84w5MSWdZnuPz8xa 8KDdcaqWeY+mdLonfq5K/DZhOcV6UanBEXFFrmGZymSSqF2zYPpzPBB/7+B29S5F 68v8ScTY8a3fKjhQqrqzNOOKbVMSwM7m8dZ5o69nIW/knvdmxeg= =eekA -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl/ifp0ACgkQ7ZfpDmKq fjQnxA//ZYROGBW1B1b7EY+j8b8z8oBsrzuN+PHkpmXqXre/rVJfIU7NoRoOoZ27 U3JDYPhQ6jy3fOCkW8Xa/eBwEe9PXfBnlpjAYbQ4d7KUvxzDauNG7Sch/aOKuQqE LIM9B+Gdyojn1dAimKcVh8z+lSH3f+gaL3/kCDAPDCJqxsDpbnzQ5rsgpf7OlkG8 6yBRo4wNsW6D49nEVScCPwtmlMQUBFesV0J49rZ74NL9eArIjjdHgwSSc0RtSTLx VT8yDmV1ZW93W4+ZKwfnyPb/u8w8O5NP42SoWHOdXV40UpyU/jWfioKPhbLr+D1R AU+uPE/GBpIPEd6dL75WNMQWvSPkER+QEcTYdzJIMiqOpwUXEADn5/miH3JiJ1Cx rgkQuukOzmmshL3YiKxWM2WT41NdVZn4MrXx3TfS2gw0Am4zElkRwcNanFc7Ksyl PNoJrypAKPnArG3+P0LSFxq9nQUsaajlYcAqYthRtzTicPA13iXWml/ATh1sw36H rJAEAVBg2TmIHo4/zlEuV7alrnBT0tIz38RtGvGA7lVB0w8ZLrh3BqyezucoK3Zc GsleX8wkJrrWMcdVPnRUCfCosx8IN57349mnL2g5v1B3Ij/ytYy4yDr8H7/vAX2c ddaxW1aluGBzL48ZKKJedDP/vZgRWINXMAyEyqdXW2G33aMsFlw= =IS+h -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

2020d release of tz code and data available
by Paul Eggert Oct. 21, 2020

Oct. 21, 2020

The 2020d release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Palestine ends DST earlier than predicted, on 2020-10-24. Changes to past and future timestamps Palestine ends DST on 2020-10-24 at 01:00, instead of 2020-10-31 as previously predicted (thanks to Sharef Mustafa.) Its 2019-10-26 fall-back was at 00:00, not 01:00 (thanks to Steffen Thorsen.) Its 2015-10-23 transition was at 01:00 not 00:00, and its spring 2020 transition was on March 28 at 00:00, not March 27 (thanks to Pierre Cashon.) This affects Asia/Gaza and Asia/Hebron. Assume future spring and fall transitions will be on the Saturday preceding the last Sunday of March and October, respectively. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020d.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit ab21ad9710b88f28995b7ed47c6efda47ffb1be5 dated 2020-10-21 11:24:13 -0700 and tagged '2020d' in the development GitHub repository at <https://github.com/eggert/tz>. 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If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

2020c release of tz code and data available
by Paul Eggert Oct. 20, 2020

Oct. 20, 2020

The 2020c release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Fiji starts DST later than usual, on 2020-12-20. Changes to future timestamps Fiji will start DST on 2020-12-20, instead of 2020-11-08 as previously predicted. DST will still end on 2021-01-17. (Thanks to Raymond Kumar and Alan Mintz.) Assume for now that the later-than-usual start date is a one-time departure from the recent pattern. Changes to build procedure Rearguard tarballs now contain an empty file pacificnew. Some older downstream software expects this file to exist. (Problem reported by Mike Cullinan.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020c.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit ab21ad9710b88f28995b7ed47c6efda47ffb1be5 dated 2020-10-16 11:15:53 -0700 and tagged '2020c' in the development GitHub repository at <https://github.com/eggert/tz>. 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If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

2 1

2020b release of tz code and data available
by Paul Eggert Oct. 7, 2020

Oct. 7, 2020

The 2020b release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Revised predictions for Morocco's changes starting in 2023. Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08. Macquarie Island has stayed in sync with Tasmania since 2011. Casey, Antarctica is at +08 in winter and +11 in summer. zic no longer supports -y, nor the TYPE field of Rules. Changes to future timestamps Morocco's spring-forward after Ramadan is now predicted to occur no sooner than two days after Ramadan, instead of one day. (Thanks to Milamber.) The first altered prediction is for 2023, now predicted to spring-forward on April 30 instead of April 23. Changes to past and future timestamps Casey Station, Antarctica has been using +08 in winter and +11 in summer since 2018. The most recent transition from +08 to +11 was 2020-10-04 00:01. Also, Macquarie Island has been staying in sync with Tasmania since 2011. (Thanks to Steffen Thorsen.) Changes to past and future time zone abbreviations and DST flags Canada's Yukon, represented by America/Whitehorse and America/Dawson, changes its time zone rules from -08/-07 to permanent -07 on 2020-11-01, not on 2020-03-08 as 2020a had it. This change affects only the time zone abbreviation (MST vs PDT) and daylight saving flag for the period between the two dates. (Thanks to Andrew G. Smith.) Changes to past timestamps Correct several transitions for Hungary for 1918/1983. For example, the 1983-09-25 fall-back was at 01:00, not 03:00. (Thanks to Géza Nyáry.) Also, the 1890 transition to standard time was on 11-01, not 10-01 (thanks to Michael Deckers). The 1891 French transition was on March 16, not March 15. The 1911-03-11 French transition was at midnight, not a minute later. Monaco's transitions were on 1892-06-01 and 1911-03-29, not 1891-03-15 and 1911-03-11. (Thanks to Michael Deckers.) Changes to code Support for zic's long-obsolete '-y YEARISTYPE' option has been removed and, with it, so has support for the TYPE field in Rule lines, which is now reserved for compatibility with earlier zic. These features were previously deprecated in release 2015f. (Thanks to Tim Parenti.) zic now defaults to '-b slim' instead of to '-b fat'. zic's new '-l -' and '-p -' options uninstall any existing localtime and posixrules files, respectively. The undocumented and ineffective tzsetwall function has been removed. Changes to build procedure The Makefile now defaults POSIXRULES to '-', so the posixrules feature (obsolete as of 2019b) is no longer installed by default. Changes to documentation and commentary The long-obsolete files pacificnew, systemv, and yearistype.sh have been removed from the distribution. (Thanks to Tim Parenti.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020b.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 47311d42a3ad6a8afa95d1f63fa8b6bb2710b16e dated 2020-10-06 18:35:04 -0700 and tagged '2020b' in the development GitHub repository at <https://github.com/eggert/tz>. 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If your tzdata parser does not yet support negative DST offsets or times past 24:00, this release's data entries can be turned into a rearguard-format tarball that does not use these features. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

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2020a release of tz code and data available
by Paul Eggert April 24, 2020

April 24, 2020

The 2020a release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Morocco springs forward on 2020-05-31, not 2020-05-24. Canada's Yukon advanced to -07 year-round on 2020-03-08. America/Nuuk renamed from America/Godthab. zic now supports expiration dates for leap second lists. Changes to future timestamps Morocco's second spring-forward transition in 2020 will be May 31, not May 24 as predicted earlier. (Thanks to Semlali Naoufal.) Adjust future-year predictions to use the first Sunday after the day after Ramadan, not the first Sunday after Ramadan. Canada's Yukon, represented by America/Whitehorse and America/Dawson, advanced to -07 year-round, beginning with its spring-forward transition on 2020-03-08, and will not fall back on 2020-11-01. Although a government press release calls this "permanent Pacific Daylight Saving Time", we prefer MST for consistency with nearby Dawson Creek, Creston, and Fort Nelson. (Thanks to Tim Parenti.) Changes to past timestamps Shanghai observed DST in 1919. (Thanks to Phake Nick.) Changes to timezone identifiers To reflect current usage in English better, America/Godthab has been renamed to America/Nuuk. A backwards-compatibility link remains for the old name. Changes to code localtime.c no longer mishandles timestamps after the last transition in a TZif file with leap seconds and with daylight saving time transitions projected into the indefinite future. For example, with TZ='America/Los_Angeles' with leap seconds, zdump formerly reported a DST transition on 2038-03-14 from 01:59:32.999... to 02:59:33 instead of the correct transition from 01:59:59.999... to 03:00:00. zic -L now supports an Expires line in the leapseconds file, and truncates the TZif output accordingly. This propagates leap second expiration information into the TZif file, and avoids the abovementioned localtime.c bug as well as similar bugs present in many client implementations. If no Expires line is present, zic -L instead truncates the TZif output based on the #expires comment present in leapseconds files distributed by tzdb 2018f and later; however, this usage is obsolescent. For now, the distributed leapseconds file has an Expires line that is commented out, so that the file can be fed to older versions of zic which ignore the commented-out line. Future tzdb distributions are planned to contain a leapseconds file with an Expires line. The configuration macros HAVE_TZNAME and USG_COMPAT should now be set to 1 if the system library supports the feature, and 2 if not. As before, these macros are nonzero if tzcode should support the feature, zero otherwise. The configuration macro ALTZONE now has the same values with the same meaning as HAVE_TZNAME and USG_COMPAT. The code's defense against CRLF in leap-seconds.list is now portable to POSIX awk. (Problem reported by Deborah Goldsmith.) Although the undocumented tzsetwall function is not changed in this release, it is now deprecated in preparation for removal in future releases. Due to POSIX requirements, tzsetwall has not worked for some time. Any code that uses it should instead use tzalloc(NULL) or, if portability trumps thread-safety, should unset the TZ environment variable. Changes to commentary The Îles-de-la-Madeleine and the Listuguj reserve are noted as following America/Halifax, and comments about Yukon's "south" and "north" have been corrected to say "east" and "west". (Thanks to Jeffery Nichols.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2020a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2020a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2020a.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 7aec41a1d9b57c581af086db5de5bf99b165c405 dated 2020-04-23 16:03:47 -0700 and tagged '2020a' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 5235d6590e844491df32375857f5f36ba0046f2d21a078375188dff79b125cf9b69136a0a431624de1ecfa9d53b62a232f0e6ee0b734294cec62b670e6265cb2 tzcode2020a.tar.gz 2a2fc2e3ad8a6e4c574242296c847ad582c2c1d86add9c556e65c812d19b9528522e3c4dddb5239017091825d2acc5a2ccaf21dc41b900b6c300ef4264cc5a9d tzdata2020a.tar.gz 6ef3ed39ee379adce421e7964ce9cf3d36361e2ba29de78e43b36d524c5722fd151c11ac60c952130d2623ecea9d8b56b4652f394e60a893a76d2ad769072d9d tzdb-2020a.tar.lz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl6iH9IACgkQ7ZfpDmKq fjQK6BAAgxpJVrK35eNuGheX51np4f7mOAomDzMqXSaYZqYLW2EZCa+JW6VWfrEm eMZYVA/U33WsIGTjyyjfmq5FVwIQj0An+mAtlOR5dd34/ikGddZjd28ChrMW9+56 VFS7dA2pUjMzQp7yGG5sVek5OeGaHajfwxzBptPrsK+JwyNC1RcGetEcrgUwwznX S1iiLFvfzgVhrqnYzthIuoUikLSUkNumkr4/8frsYwywQ0axAzpkLi5rWxOfZAi6 a1MLMXvKmzXeiNCu5oeKl2XfTymBUVyF7K3dzFdkrOto8pSTDR+BbSh88mbe7tct Rt0q/GRq8fityECzdVAzoAqCRUU97t8V4VHNFXSxy32CN99cjsLdRMiVVEGTq+TT A3m9FjQidSCP3apzQe9JDfj536gQFSkUmDlcFwya31zolRoWkIFmxIhmZWIYlm9T Wjqc7y7UnrBNvyDE4pemQ4YYHjk5YLjwoaUIafDJTAiDRfcf53SRlr3tbFcYjAt/ Tql77DWuLmg8PGFtRiyCMqrehboGi0Eu3he2MmYtsJB2ZXFN0yZQmlvDen9fkt1k EqUkKjhHmVBb5WVS5pbl8mGLr1TFtnnedmLw4xULrDzsyJ5tsqzVnkl6Ga/eoIal lLIxpXrYqQLdHNtTpdmJkqZ/89++HDov9JR0uMzU8LxFwH6duQ4= =0y/R -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl6iH9MACgkQ7ZfpDmKq fjTb6g/+P/l6Nev5Zv8mUktnT6eNKohtgpNRyHd8nYV92wmTiDSzAArFy7oi5CVV /jMv8sbV1ssq/5rQ6HUQuMDPgEIO405gxmqRWMhE6UwUbRxxa+/HKGUJH0AHY6Dh 1UhVD7QA6fDovs84ip/WgTEZYcYApLr2A3IfC0rDqDo42DiSnErFQDvqRMJQkQS1 p2Pv7YtW/2NZ52wkfq75klSsjlXzlz6CzM5P3/YU/Hylj42sQdbdtbUAyQug3YpD QQ2PiZoP92iiGrcwkKXa5xvXJ6jEZCXqi7HbJKt8OW+XpZ/ZYbTZRq+JvMbTqkOL +XvVufo/pVASgv2V0ynzJu/XRiFUeJaecmEg6QiAiJ74UMTXSGFnK//R32M9dp29 B4p2X2jmW9qjCwjbjQXl1Yl5ddlSyvBk2Lk4s1repQ2t7kphZx2C8P2WyQYGeP7H nZDucfmWK4OSh8cINexBE8xyagmv1T8mC4qEQbVPva6JysaodNBcf9WkKMCgituP tbPsVekSmG1GyN2ixPtpY86Fzjr60mEg1UKqHZIagRmH4kjUwd1gINCJgONaZZxo c1VfBD8ZORBZfG27+V5ISotKrK2UrKtcrSUEU1CC/ibOm1sSPfg0d5uxUVvg4E8+ okdszbMnQ1i0eVKW+L+jY5XOO8kmSLp4YcnrqXDyZabxyWIGMt4= =7U2J -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl6iH9QACgkQ7ZfpDmKq fjTDQQ//S8WK8/aBHCKOiNvNFL82SHsrwSzsMt/5AyWzTUgkZZdhuhPmCu/qim0M J6Gm+1XUPaq6WKQnHbNk4wrmKjlRX/R1DWIA+2FhVH0iFSAX+qrnc/KUkm0hVXg4 u8aylAUOQvdhDfVX4PafCx21Kf1sk46oleRgi5lr3cSPAIKGsiEQKGR5EMbt/8mt 55zpxYGTj4o8yjY4NqEOBD8SHts0BO0xFq2eh6C71KeTeHKm/SasIFbvhIZug2cO YQyAnBiybfsSwIPXfYZr9ux81BztdzkzS6n1EBgGrHmk/+xrpBbmaknjFDMu+Nln qOPnTQCmp3NBXOYeVnxMAgIy07yEcAR7ReV0FuJFaxrkGYstfV6k5ylhk1iuHnIZ dOPSJa4eD+cIPWJTo0AsOkNx8+xJ6DkP8iudCpGUrEmXFSoMuFr8b5QwOxsRF/eC oIIRVO35gF12xr424DVKE72Z8yELoDGXzfWh8UbY/j0Lasq6RXqF9mrCMrugxlwx 1GofM2zrIkzkgLfMoV5zJfKrPiLPj213uGmrctJNcSggtSEA0DBvSvuhVe8hzolZ /taWc+/gCPBv159s3qedQyQbfHY0/IIkePdezwn4f7DQvh7MTOteE81AwJvqtkmQ fhSp+hz9k5m4CKuY9+71p+Srefc0i8PsBpmVCDYUn6PFqXaXsiA= =dCQ0 -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, this release's data entries can be turned into a rearguard-format tarball that does not use these features. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

2019c release of tz code and data available
by Paul Eggert Sept. 11, 2019

Sept. 11, 2019

The 2019c release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Fiji observes DST from 2019-11-10 to 2020-01-12. Norfolk Island starts observing Australian-style DST. Changes to future timestamps Fiji's next DST transitions will be 2019-11-10 and 2020-01-12 instead of 2019-11-03 and 2020-01-19. (Thanks to Raymond Kumar.) Adjust future guesses accordingly. Norfolk Island will observe Australian-style DST starting in spring 2019. The first transition is on 2019-10-06. (Thanks to Kyle Czech and Michael Deckers.) Changes to past timestamps Many corrections to time in Turkey from 1940 through 1985. (Thanks to Oya Vulaş via Alois Treindl, and to Kıvanç Yazan.) The Norfolk Island 1975-03-02 transition was at 02:00 standard time, not 02:00 DST. (Thanks to Michael Deckers.) South Korea observed DST from 1948 through 1951. Although this info was supposed to appear in release 2014j, a typo inadvertently suppressed the change. (Thanks to Alois Treindl.) Detroit observed DST in 1967 and 1968 following the US DST rules, except that its 1967 DST began on June 14 at 00:01. (Thanks to Alois Treindl for pointing out that the old data entries were probably wrong.) Fix several errors in pre-1970 transitions in Perry County, IN. (Thanks to Alois Triendl for pointing out the 1967/9 errors.) Edmonton did not observe DST in 1967 or 1969. In 1946 Vancouver ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not 10-06. In 1945 Königsberg (now Kaliningrad) switched from +01/+02 to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated EET/EEST, not CET/CEST. (Thanks to Alois Triendl.) In 1946 Königsberg switched to +03 on 04-07 not 01-01. In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not 01-01 at 00:00. (Thanks to Alois Treindl and Michael Deckers.) Also, it switched from CST to CDT on 1950-04-30, not 1947-04-27. The 1892-05-01 transition in Brussels was at 00:17:30, not at noon. (Thanks to Michael Deckers.) Changes to past time zone abbreviations and DST flags Hong Kong Winter Time, observed from 1941-10-01 to 1941-12-25, is now flagged as DST and is abbreviated HKWT not HKT. Changes to code leapseconds.awk now relies only on its input data, rather than also relying on its comments. (Inspired by code from Dennis Ferguson and Chris Woodbury.) The code now defends against CRLFs in leap-seconds.list. (Thanks to Brian Inglis and Chris Woodbury.) Changes to documentation and commentary theory.html discusses leap seconds. (Thanks to Steve Summit.) Nashville's newspapers dueled about the time of day in the 1950s. (Thanks to John Seigenthaler.) Liechtenstein observed Swiss DST in 1941/2. (Thanks to Alois Treindl.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2019c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2019c.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2019c.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit 765984a9356b01bf1c629fb474c5cee8b6ba2c70 dated 2019-09-11 08:59:48 -0700 and tagged '2019c' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 61ef36385f501c338c263081486de0d1fccd454b86f8777b0dbad4ea3f21bbde059d0a91c23e207b167ed013127d3db8b7528f0188814a8b44d1f946b19d9b8b tzcode2019c.tar.gz 2921cbb2fd44a6b8f7f2ed42c13fbae28195aa5c2eeefa70396bc97cdbaad679c6cc3c143da82cca5b0279065c02389e9af536904288c12886bf345baa8c6565 tzdata2019c.tar.gz cc76c25a55868d61e8500293d1ee3cadb0055987fc81ad0ed08add548e1c6a19cd2a10f4c4313827e4ab46bd2fbf16607519b4db92930ebaaa87062fa4c8b55d tzdb-2019c.tar.lz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl15Gt8ACgkQ7ZfpDmKq fjQc4xAAgd+mFqVxnuM3sbzyd4/bv7Fp9/lKjY9A4P+/K2ihOYYztYvMntwVWcRf mQPOfnoHgYw3lFb+uUiqiC2N3UCLz7Yj7PTVmikOUmOZP9Fd9rLz4fSM1LiQztGa ocvpWo0kxth4gbxFMWaoa2N4sXCHe561z/McP+7DItziIvOA5VfY8CYdTQC/KOnX 9U1Ih/wO+xUdJEcdseQSwsF6iLtd3dPKKSOZVkxro2xPYlDiXv07XdUnnF4BN8cG /himcxLaQc5z4g1ZvLMZCg1lHEY6KbtiCjU7oZKQsFe7DyFgAn/wMaOmYHieGwlF Pbgfkv/BzstZtUCxkZE1UKqlN5jTLbxBCLJGO6CIenGh5LIyc4sHiXumhPCwhpUV CU68etDsRwkTWmgRhDrXgRawtxVF/PsfAp3Zdtp/KKhsegy/jin9JUwlcs9AL4Rs udHIXUlcSUz3n4UR4YFBwoxTbbQ7aDCe++W+U8hHfRwzYTWYLKxyVhyb/2hp6gaL Dr+iJbnfwi3jsfCG1cVYnicmHDchpcK40G2Y9YAFZ8BX8LdikOvbfFj55yKHT4Ym kgtlQgjDyuKmmwdF7Eolz8HuKSm14FOTYEuOxToPgQK783kMrZuOVXyiQlJZJ9Oe XgJNDYTmmIyydehwK2Av8MYtDv3xA/SDfLAJp6bZGw1QzBcwkCU= =GNwR -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl15Gt8ACgkQ7ZfpDmKq fjQJIQ//d285K+JrdfrQdhWCps5cQkxylPUyCvuBLEW7fI/hbyyWDL5Mh0KF1goT 9eboGFxenHsNGpEpyEp9DGPc17PmA4lck0gQ7Uz3dZ/AkmZ+mFipHKlxk8SDDNEV WssSqdKEi8ZkKznVRrfQt2RAHeNHy2xofKmhkVn3dOCOMzp4RCC/eet+gqDVCXmT jN+sLRpWJq66fn/Ap3lpAvXVHb5aw/fLb1VsncD5L6JppGdCvdPpEGo4Hx4LgmVt pxQE0zACGSQzC49P6UsHPP0kiQDCAvDheyKQsnnWR4ii2elOrcQncKXaSla+CCqQ dBClTx52fCTUWzmFHI/aTRz01jOomKa5bK1QSgmIZK4dg56oC6zj9740ingcSrt3 Q5+hQp5KeXjab/jqgZhWbuWG90Yho8v8WLP9Pde8CYma+UyKzIPsD7KdVqHzGylK PYkeyfgR3GuaxOYnseg+xr68OEYXK36PAGspiJkdGklRZ0eoEPNm1PpQSm+mVORP LOWgvR6+kz1AFM9Qr0hZph1YfiFp4P3X/fbwweW+uHmSAyiXiXTvDlOhBJ4Od2mG J8WWgMzXOK6MP+vbKSVXysFX6GTXkaP4c9Ou9B9OQkF5PGK6294so6dcVJ9Aw7ot ZWyzyEdkUX3gyHjsaLbS4TexBu8Y46IPoL+42FbBdO61Aj2QhBA= =EFVW -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAl15GuAACgkQ7ZfpDmKq fjTNTRAAqcpsGc0/UXv/GlTcSZ1EYlBYyX5tDRe+3nWh6x0F1XfSiEmQ9YW/VgNW WgziP6TFxBF442qKPA4XvP6HY7iLaL4/7XbZjjW2P7xVvv/T/xOzr4dWUp2X+ubi lpJ22a2p3C+jGFHgN8zt5F8wpM8/hT2h6oZEbiddK0mcv/kQFRw6Qh7ThRtEcxgO EO3DW7jo57cG5O0E3+7175BEvX1rthPuVTqE+sEY53G6PNuQhViEzH4SYcyJYx7T il5d9cGthMjeMelmnMYLtJoWyrJ8krVVxIAlESjZCtFTsACKL4l0PEMSMqQyCwZ2 94jQoYWcsrwVYwzJ+f/hm87e5flfqdL/V81zRNNG8n2Zj9fJYNI1MLcJkxbI3Qi0 iP0aeyohw+mXY5UyY4Pg7e4DiWQK2vTGKffsgp5kSN4TowGcWDbkOMHQPqpXcihg uJmKT7m4tgDewTLVDPMO7ypYbpXmdbTWAvKJsZgKqcxHu35x98YvdAxK3qQPVWH/ WWeBXr0qFu6UqrpQD6uXqmgV7cKeST/vK+eyWdZv7hr7gABLdp66/i/VUlb/WPRQ 4U5rrXj7aUAB66SpPzlYHXlOsT2i3O5XsD4H2mUytpnIk/vEE5BYeG3OkVO8jKVt oEB4do+jdAdRlG+DUXXqnCvxrTkNOp0/ZS6gt3iIfGyyMdAJSmQ= =ysDP -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, this release's data entries can be turned into a rearguard-format tarball that does not use these features. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

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