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Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 91 |
1 files changed, 89 insertions, 2 deletions
@@ -1,5 +1,92 @@ News for the tz database +Release 2022a - 2022-03-15 23:02:01 -0700 + + Briefly: + Palestine will spring forward on 2022-03-27, not -03-26. + zdump -v now outputs better failure indications. + Bug fixes for code that reads corrupted TZif data. + + Changes to future timestamps + + Palestine will spring forward on 2022-03-27, not 2022-03-26. + (Thanks to Heba Hamad.) Predict future transitions for first + Sunday >= March 25. Additionally, predict fallbacks to be the first + Friday on or after October 23, not October's last Friday, to be more + consistent with recent practice. The first differing fallback + prediction is on 2025-10-24, not 2025-10-31. + + Changes to past timestamps + + From 1992 through spring 1996, Ukraine's DST transitions were at + 02:00 standard time, not at 01:00 UTC. (Thanks to Alois Treindl.) + + Chile's Santiago Mean Time and its LMT precursor have been adjusted + eastward by 1 second to align with past and present law. + + Changes to commentary + + Add several references for Chile's 1946/1947 transitions, some of + which only affected portions of the country. + + Changes to code + + Fix bug when mktime gets confused by truncated TZif files with + unspecified local time. (Problem reported by Almaz Mingaleev.) + + Fix bug when 32-bit time_t code reads malformed 64-bit TZif data. + (Problem reported by Christos Zoulas.) + + When reading a version 2 or later TZif file, the TZif reader now + validates the version 1 header and data block only enough to skip + over them, as recommended by RFC 8536 section 4. Also, the TZif + reader no longer mistakenly attempts to parse a version 1 TZIf + file header as a TZ string. + + zdump -v now outputs "(localtime failed)" and "(gmtime failed)" + when local time and UT cannot be determined for a timestamp. + + Changes to build procedure + + Distribution tarballs now use standard POSIX.1-1988 ustar format + instead of GNU format. Although the formats are almost identical + for these tarballs, ustar headers' magic fields contain "ustar" + instead of "ustar ", and their version fields contain "00" instead + of " ". The two formats are planned to diverge more significantly + for tzdb releases after 2242-03-16 12:56:31 UTC, when the ustar + format becomes obsolete and the tarballs switch to pax format, an + extension of ustar. For details about these formats, please see + "pax - portable archive interchange", IEEE Std 1003.1-2017, + <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html#tag_20_92_13>. + + +Release 2021e - 2021-10-21 18:41:00 -0700 + + Changes to future timestamps + + Palestine will fall back 10-29 (not 10-30) at 01:00. + (Thanks to P Chan and Heba Hemad.) + + +Release 2021d - 2021-10-15 13:48:18 -0700 + + Briefly: + Fiji suspends DST for the 2021/2022 season. + 'zic -r' marks unspecified timestamps with "-00". + + Changes to future timestamps + + Fiji will suspend observance of DST for the 2021/2022 season. + Assume for now that it will return next year. (Thanks to Jashneel + Kumar and P Chan.) + + Changes to code + + 'zic -r' now uses "-00" time zone abbreviations for intervals + with UT offsets that are unspecified due to -r truncation. + This implements a change in draft Internet RFC 8536bis. + + Release 2021c - 2021-10-01 14:21:49 -0700 Briefly: @@ -546,13 +633,13 @@ Release 2019c - 2019-09-11 08:59:48 -0700 probably wrong.) Fix several errors in pre-1970 transitions in Perry County, IN. - (Thanks to Alois Triendl for pointing out the 1967/9 errors.) + (Thanks to Alois Treindl 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 + EET/EEST, not CET/CEST. (Thanks to Alois Treindl.) 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 |