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September 2016

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2016g release of tz code and data available
by Paul Eggert Sept. 28, 2016

Sept. 28, 2016

The 2016g 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 time stamps Turkey switched from EET/EEST (+02/+03) to permanent +03, effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03" rather than an invented abbreviation for the new time. New leap second 2016-12-31 23:59:60 UTC as per IERS Bulletin C 52. (Thanks to Tim Parenti.) Changes to past time stamps For America/Los_Angeles, spring-forward transition times have been corrected from 02:00 to 02:01 in 1948, and from 02:00 to 01:00 in 1950-1966. For zones using Soviet time on 1919-07-01, transitions to UT-based time were at 00:00 UT, not at 02:00 local time. The affected zones are Europe/Kirov, Europe/Moscow, Europe/Samara, and Europe/Ulyanovsk. (Thanks to Alexander Belopolsky.) Changes to past and future time zone abbreviations The Factory zone now uses the time zone abbreviation -00 instead of a long English-language string, as -00 is now the normal way to represent an undefined time zone. Several zones in Antarctica and the former Soviet Union, along with zones intended for ships at sea that cannot use POSIX TZ strings, now use numeric time zone abbreviations instead of invented or obsolete alphanumeric abbreviations. The affected zones are Antarctica/Casey, Antarctica/Davis, Antarctica/DumontDUrville, Antarctica/Mawson, Antarctica/Rothera, Antarctica/Syowa, Antarctica/Troll, Antarctica/Vostok, Asia/Anadyr, Asia/Ashgabat, Asia/Baku, Asia/Bishkek, Asia/Chita, Asia/Dushanbe, Asia/Irkutsk, Asia/Kamchatka, Asia/Khandyga, Asia/Krasnoyarsk, Asia/Magadan, Asia/Omsk, Asia/Sakhalin, Asia/Samarkand, Asia/Srednekolymsk, Asia/Tashkent, Asia/Tbilisi, Asia/Ust-Nera, Asia/Vladivostok, Asia/Yakutsk, Asia/Yekaterinburg, Asia/Yerevan, Etc/GMT-14, Etc/GMT-13, Etc/GMT-12, Etc/GMT-11, Etc/GMT-10, Etc/GMT-9, Etc/GMT-8, Etc/GMT-7, Etc/GMT-6, Etc/GMT-5, Etc/GMT-4, Etc/GMT-3, Etc/GMT-2, Etc/GMT-1, Etc/GMT+1, Etc/GMT+2, Etc/GMT+3, Etc/GMT+4, Etc/GMT+5, Etc/GMT+6, Etc/GMT+7, Etc/GMT+8, Etc/GMT+9, Etc/GMT+10, Etc/GMT+11, Etc/GMT+12, Europe/Kaliningrad, Europe/Minsk, Europe/Samara, Europe/Volgograd, and Indian/Kerguelen. For Europe/Moscow the invented abbreviation MSM was replaced by +05, whereas MSK and MSD were kept as they are not our invention and are widely used. Changes to zone names Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link. (Thanks to David Massoud.) Changes to code zic no longer generates binary files containing POSIX TZ-like strings that disagree with the local time type after the last explicit transition in the data. This fixes a bug with Africa/Casablanca and Africa/El_Aaiun in some year-2037 time stamps on the reference platform. (Thanks to Alexander Belopolsky for reporting the bug and suggesting a way forward.) If the installed localtime and/or posixrules files are symbolic links, zic now keeps them symbolic links when updating them, for compatibility with platforms like OpenSUSE where other programs configure these files as symlinks. zic now avoids hard linking to symbolic links, avoids some unnecessary mkdir and stat system calls, and uses shorter file names internally. zdump has a new -i option to generate transitions in a more-compact but still human-readable format. This option is experimental, and the output format may change in future versions. (Thanks to Jon Skeet for suggesting that an option was needed, and thanks to Tim Parenti and Chris Rovick for further comments.) Changes to build procedure An experimental distribution format is available, in addition to the traditional format which will continue to be distributed. The new format is a tarball tzdb-VERSION.tar.lz with signature file tzdb-VERSION.tar.lz.asc. It unpacks to a top-level directory tzdb-VERSION containing the code and data of the traditional two-tarball format, along with extra data that may be useful. (Thanks to Antonio Diaz Diaz, Oscar van Vlijmen, and many others for comments about the experimental format.) The release version number is now more accurate in the usual case where releases are built from a Git repository. For example, if 23 commits and some working-file changes have been made since release 2016g, the version number is now something like '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. Official releases uses the same version number format as before, e.g., '2016g'. To support the more-accurate version number, its specification has moved from a line in the Makefile to a new source file 'version'. The experimental distribution contains a file to2050.tzs that contains what should be the output of 'zdump -i -c 2050' on primary zones. If this file is available, 'make check' now checks that zdump generates this output. 'make check_web' now works on Fedora-like distributions. Changes to documentation and commentary tzfile.5 now documents the new restriction on POSIX TZ-like strings that is now implemented by zic. Comments now cite URLs for some 1917-1921 Russian DST decrees. (Thanks to Alexander Belopolsky.) tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J (thanks to Meno Hochschild) and ThreeTen-Extra, and its description of Java 8 has been brought up to date (thanks to Stephen Colebourne). Its description of local time on Mars has been updated to match current practice, and URLs have been updated and some obsolete ones removed. Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2016g.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz ftp://ftp.iana.org/tz/releases/tzdb-2016g.tar.lz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2016g.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2016g.tar.gz http://www.iana.org/time-zones/repository/releases/tzdb-2016g.tar.lz As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz http://www.iana.org/time-zones/repository/tzdb-latest.tar.lz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzdb-latest.tar.gz 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 04394af38a9d08fc6655466dfd8d4cf47025893d dated 2016-09-13 08:56:38 -0700 and tagged '2016g' in the experimental github repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 280f9bd9ee6eacc5cf82004dc5efd4e1d245e68a576c6d8172ebae0247d0777ac8987aed33609106eb1d596229979452023b593d1a4a58be9bc0932c376a3533 tzcode2016g.tar.gz 7b414c1af80faed335a59f40a18931265b71f8dacc3a5f3bd93e8ea0e3d6416a6839dfb88c64b04df3c728c4fb44105503ddb6e87f317dbff29e43c491c2fb3d tzdata2016g.tar.gz f3a26967d77a27c015f3259ab40ff77de16b9d517cbf8bbff30c110a239e3104289727e529cb5675c140cba199073575a63d84265e4b8068f70d730bb780fea8 tzdb-2016g.tar.lz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJX2CTkAAoJEO2X6Q5iqn40/dsQAKZVDkj6jZNmdcS3qfArD30Z U9K7AwLUlugG6WuwMzPYPp2zMNhdM3pVdfSrtgNPjGBJY4kISIiSnNx8CuvNUxlf u+gnsPkr2qfEMEhjEKS9K4yeBi12Bo3WX7lxFJDSqXfQM389EIQufLdcpggQVnoZ mbUCSGS3P+C+JCZBr3ltc6dZVo3OofduZR6rZauyKdHLsFo3UZgo3HZ1AgADU5KB b+8JUAUMssOFr9dp61mF1WBlhHrg7+SubCZe5a4QggON73prhCQWtNFH/de76Ep0 vpjn9y8dbzjSGEuMGxRRH7aBN1XYOiTyBEO3rXYA5J93I7C0IXRD3hALCpqJH/+F dw3lzEOHi7drX/WPS2eHYaHV6GtXs8BpU39lzPiyQ89ZwFDI+ed+IFx0F2nhGI4a YnncsPwHtodhK5AnTifDA9F95MuAZiILBlMLklaFicbtVuptM/pHgSRKKbkjptfR 3M8XmCgw/1zOAyMvc0D7X5YBspKacXDnMNX4jGDtdKoDiUAEjNf2w4RXV9fYg7Wa 5RgcqqhAcSW1SpyUcHo+po6oXTELaBh7+QGPKqsdG8ntbaywqYNT6oJqkLtYzyVj sraRd7+f0EXdgrYTi6rZim/v6VudEqGGBRVfenXzQPCwtaNY1/+UW+Ruo/Yqlo9k Cs4QYazop8GmeH74lAIx =+WWr -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJX2CTkAAoJEO2X6Q5iqn40i8IP/jtQ8PYjBG3NJV5uvRGzbV60 n1vdVJDMU9SkRpiT1G8p/cjr4mszUnm+qsZNZGg1wZknBuQdnglAMwA2lj8Llv5N gAlGj/JDEsNESfOC+9wD+NtZK+aUxJzHSXl4xzhzCMjBKaPOytcLKuGscMrpcGFH 2IDyjdjHOfDNG5PAxu0wjkMsKFUt95wmuWzPu1x48EqCF5c2zhanQI3mrugnmLwm MAnq69E+z1q/5WLOzZEfRGXm98BpS90PC89fWwiKdKciHvTVFO9XLz9pknaeRP4N uNcGoF0zEB+unAKoQmMI248sQZ1DzQGRC/niZ9SG70xHSdtBQF19B4oNoh27h3jz j2ZF262PZCL6J5SoEISqXRFkiZbRFR79uwUA5LQRyFWu4gg63wk85+gx8BjxwbPP bUVtV4IBRScFdVC7Li3Xw5PF8cwfQRf0JAxTdtwSgY9tC2pEjomCkb9mzSMDz78w CSFl6yNuL44atUmHK0XFCNIJnyoG0hNrIWwOx/zmlYnaX9Iqm6H9LmXaUcV3rg0N uKaTWuvZQzgxRwbrq0NxH8O/B1LWmdOls4ZGoMboVpTracg6APATXJIaQjm+RKjH EGtDiihPYP/WbrCg823uVPNHCbyoMcFrZB34ujjO89ObH8BsLJKmnUeQUCw74mok D92yWr5OAzGJYJFpgUNr =WYLD -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJX2CTkAAoJEO2X6Q5iqn40esIQALCF7VcFJCoopVUcjDigH2CU iG/tRiTiYUboTcLEyZjbXJ8JVuOpOdm5TxQ1U6jUnJidTcl4n7Zcm3BLwlRO4ijl 82sadHGAakvlmyIGulFMot9QfpU2VCAFTJjCs7fDRZOw6jszCGcn3JneuW1JfLV+ xSqkBhUBl4BoXkvRYyL8hOTOofST+Uo2ceAwJt+7IARSlpTqHAXmE8HhstwPuI6C CbgWi2arwJl3CnGz2hkSTo+OYb39SPNTFmDcNRxuw0MztsfA999bkeF67G1ZFhpN klXDGgIkv9NMAqozeblp79k9TSDl2vrsnaqXIp8vQkNFDJvwSp87PzR3Lxkd3DY3 lMK9XaUW55FBGOzuepUAAGfnLjBJ1386nyxhuSM5OGAGc1a1opUmQsTDQoZlYHrj soYsmVsv/mA5rkW7zO3Vckzhq42kM7ZUKWQHKUAoN6kaitjazEpGtjpuJ6GvR2Rz 0W5bf+YyRvu8hERZXood4Un+/UDEvls5uklIOWCZOhTb2bqnHFxTNmgu/9j3faFY E54e+bRnTJIBo51o91ufl9LbNL8R9Gf97y35a4cKCTzQudbz34TMFyfbeim+cNfx Icjevab3az7FacHfURlvuWfgrb69C2qBO1ixT1f8z7vI6KJXXPFSIb36YhLEXe+d Ns8/QhJSKCoDd0EVozzQ =/tZj -----END PGP SIGNATURE-----

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