New versions of the time zone files are available by anonymous ftp from elsie.nci.nih.gov (165.112.73.1) in the ~ftp/pub directory: -rw-r--r-- 1 ado 74738 May 2 23:01 tzcode96f.tar.gz -rw-r--r-- 1 ado 73532 May 2 23:01 tzdata96g.tar.gz The changes get us some of the way to fixing the problems noted in Paul Eggert's letter yesterday (in addition to a few others). The approach has been to make zic a bit smarter about figuring out what time zone abbreviations apply just after the time specified in the "UNTIL" part of a zone line. Putting the smarts in zic means avoiding having transition times show up in both "Zone" lines and "Rule" lines, which in turn avoids multiple transition time entries in time zone files. (This also makes the zic input files such as "europe" a bit shorter and should ease maintenance.) Results of regression testing are attached. Lines marked "EGGERT" apply to problems reported in Paul's letter yesterday; lines marked "NONEGG" are other changes found in the regression testing. Lines marked "<" appear in old zdump output; lines marked ">" appear in new zdump output. Some notes: 1. The problem with simultaneously entering (or leaving) DST and subtracting an hour from the GMT offset remains. Getting the program to "do what I mean" in these cases will, I hope, follow. 2. The testing points up that the "northamerica" file specifies that Phoenix did a couple of 1944 changes at one MINUTE (rather than one HOUR) past midnight; if anyone has leads on the correctness of this, I'd love it. 3. Also, the testing points up that Budapest was supposed to have switched from using standard M-Eur rules to using its own rules on July 1, 1918, but that the new rules didn't specify use of DST until 1919. Again, if anyone knows whether Budapest turned off DST early in 1918, I'd appreciate a pointer. Folks may want to wait a bit until the dust settles. --ado OPEN NONEGG HMMM... > America/Phoenix Fri Mar 17 07:00:59 1944 GMT = Fri Mar 17 00:00:59 1944 MST isdst=0 OPEN NONEGG HMMM... > America/Phoenix Fri Mar 17 07:01:00 1944 GMT = Fri Mar 17 01:01:00 1944 MWT isdst=1 OPEN NONEGG HMMM... > America/Phoenix Sun Oct 1 06:00:59 1944 GMT = Sun Oct 1 00:00:59 1944 MWT isdst=1 OPEN NONEGG HMMM... > America/Phoenix Sun Oct 1 06:01:00 1944 GMT = Sat Sep 30 23:01:00 1944 MST isdst=0 OPEN NONEGG HMMM... < Europe/Budapest Sun Sep 29 00:59:59 1918 GMT = Sun Sep 29 02:59:59 1918 MET DST isdst=1 OPEN NONEGG HMMM... < Europe/Budapest Sun Sep 29 01:00:00 1918 GMT = Sun Sep 29 02:00:00 1918 MET isdst=0 OPEN NONEGG HMMM... < Europe/Budapest Tue Apr 15 01:59:59 1919 GMT = Tue Apr 15 02:59:59 1919 MET isdst=0 OPEN NONEGG HMMM... < Europe/Budapest Tue Apr 15 02:00:00 1919 GMT = Tue Apr 15 04:00:00 1919 MET DST isdst=1 OPEN NONEGG HMMM... > Europe/Budapest Sun Jun 30 21:59:59 1918 GMT = Sun Jun 30 23:59:59 1918 MET DST isdst=1 OPEN NONEGG HMMM... > Europe/Budapest Sun Jun 30 22:00:00 1918 GMT = Sun Jun 30 23:00:00 1918 MET isdst=0 OPEN NONEGG HMMM... > Europe/Budapest Tue Apr 15 00:59:59 1919 GMT = Tue Apr 15 01:59:59 1919 MET isdst=0 OPEN NONEGG HMMM... > Europe/Budapest Tue Apr 15 01:00:00 1919 GMT = Tue Apr 15 03:00:00 1919 MET DST isdst=1 ============================================================================================================================== OPEN EGGERT SAME FILE America/Menominee [1973: simultaneously start DST and subtract an hour from gmtoff] OPEN EGGERT SAME ZDUMP America/Juneau [1983: simultaneously end DST and subtract an hour from gmtoff] OPEN EGGERT SAME ZDUMP America/Scoresbysund [1981: simultaneously start DST and subtract an hour from gmtoff] OPEN EGGERT SAME ZDUMP Asia/Istanbul [1985: simultaneously start DST and subtract an hour from gmtoff] OPEN EGGERT ALSO BELOW Atlantic/Stanley [1985: simultaneonsly start DST and subtract an hour from gmtoff] ============================================================================================================================== CHANGED NONEGG COLLAPSE < Africa/Freetown Sun Jun 1 00:53:00 1913 GMT = Sat May 31 23:53:00 1913 FMT isdst=0 CHANGED NONEGG COLLAPSE < Africa/Freetown Sun Oct 26 00:59:59 1913 GMT = Sat Oct 25 23:59:59 1913 FMT isdst=0 CHANGED NONEGG COLLAPSE < Africa/Freetown Sun Oct 26 01:00:00 1913 GMT = Sun Oct 26 00:00:00 1913 AAT isdst=0 CHANGED NONEGG COLLAPSE > Africa/Freetown Sun Jun 1 00:53:00 1913 GMT = Sat May 31 23:53:00 1913 AAT isdst=0 CHANGED NONEGG COLLAPSE < Africa/Khartoum Wed Dec 31 21:49:52 1930 GMT = Wed Dec 31 23:49:52 1930 LMT isdst=0 CHANGED NONEGG COLLAPSE < Africa/Khartoum Sat Feb 7 21:59:59 1931 GMT = Sat Feb 7 23:59:59 1931 LMT isdst=0 CHANGED NONEGG COLLAPSE < Africa/Khartoum Sat Feb 7 22:00:00 1931 GMT = Sun Feb 8 00:00:00 1931 EET isdst=0 CHANGED NONEGG COLLAPSE > Africa/Khartoum Wed Dec 31 21:49:52 1930 GMT = Wed Dec 31 23:49:52 1930 EET isdst=0 CHANGED NONEGG FIX ABBREV. < America/Santiago Sat Jan 1 04:43:00 1910 GMT = Fri Dec 31 23:43:00 1909 SMT isdst=0 CHANGED NONEGG FIX ABBREV. < America/Santiago Sun Sep 1 04:59:59 1918 GMT = Sat Aug 31 23:59:59 1918 SMT isdst=0 CHANGED NONEGG FIX ABBREV. > America/Santiago Sat Jan 1 04:43:00 1910 GMT = Fri Dec 31 23:43:00 1909 CST isdst=0 CHANGED NONEGG FIX ABBREV. > America/Santiago Sun Sep 1 04:59:59 1918 GMT = Sat Aug 31 23:59:59 1918 CST isdst=0 CHANGED NONEGG FIX ABBREV. < America/Tijuana Fri Jan 14 07:00:00 1949 GMT = Thu Jan 13 23:00:00 1949 MST isdst=0 CHANGED NONEGG FIX ABBREV. < America/Tijuana Sun Apr 30 09:59:59 1950 GMT = Sun Apr 30 01:59:59 1950 MST isdst=0 CHANGED NONEGG FIX ABBREV. > America/Tijuana Fri Jan 14 07:00:00 1949 GMT = Thu Jan 13 23:00:00 1949 PST isdst=0 CHANGED NONEGG FIX ABBREV. > America/Tijuana Sun Apr 30 09:59:59 1950 GMT = Sun Apr 30 01:59:59 1950 PST isdst=0 CHANGED NONEGG COLLAPSE < Asia/Tel_Aviv Mon Dec 31 21:39:00 1917 GMT = Mon Dec 31 23:39:00 1917 JMT isdst=0 CHANGED NONEGG COLLAPSE < Asia/Tel_Aviv Mon Dec 31 21:59:59 1917 GMT = Mon Dec 31 23:59:59 1917 JMT isdst=0 CHANGED NONEGG COLLAPSE < Asia/Tel_Aviv Mon Dec 31 22:00:00 1917 GMT = Tue Jan 1 00:00:00 1918 IST isdst=0 CHANGED NONEGG COLLAPSE > Asia/Tel_Aviv Mon Dec 31 21:39:00 1917 GMT = Mon Dec 31 23:39:00 1917 IST isdst=0 CHANGED NONEGG FIX ABBREV. < Australia/Lord_Howe Sat Feb 28 14:00:00 1981 GMT = Sun Mar 1 00:30:00 1981 EST isdst=0 CHANGED NONEGG FIX ABBREV. < Australia/Lord_Howe Sat Oct 24 15:29:59 1981 GMT = Sun Oct 25 01:59:59 1981 EST isdst=0 CHANGED NONEGG FIX ABBREV. > Australia/Lord_Howe Sat Feb 28 14:00:00 1981 GMT = Sun Mar 1 00:30:00 1981 LHST isdst=0 CHANGED NONEGG FIX ABBREV. > Australia/Lord_Howe Sat Oct 24 15:29:59 1981 GMT = Sun Oct 25 01:59:59 1981 LHST isdst=0 CHANGED NONEGG FIX ABBREV. < Europe/Brussels Tue Aug 4 00:00:00 1914 GMT = Tue Aug 4 01:00:00 1914 WET isdst=0 CHANGED NONEGG FIX ABBREV. < Europe/Brussels Sun Apr 30 21:59:59 1916 GMT = Sun Apr 30 22:59:59 1916 WET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Brussels Tue Aug 4 00:00:00 1914 GMT = Tue Aug 4 01:00:00 1914 MET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Brussels Sun Apr 30 21:59:59 1916 GMT = Sun Apr 30 22:59:59 1916 MET isdst=0 CHANGED NONEGG FIX ABBREV. < Europe/Warsaw Wed Aug 4 22:36:00 1915 GMT = Wed Aug 4 23:36:00 1915 WMT isdst=0 CHANGED NONEGG FIX ABBREV. < Europe/Warsaw Sun Apr 30 21:59:59 1916 GMT = Sun Apr 30 22:59:59 1916 WMT isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Warsaw Wed Aug 4 22:36:00 1915 GMT = Wed Aug 4 23:36:00 1915 MET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Warsaw Sun Apr 30 21:59:59 1916 GMT = Sun Apr 30 22:59:59 1916 MET isdst=0 CHANGED NONEGG FIX ABBREV. < Europe/Warsaw Sun Jun 23 00:59:59 1940 GMT = Sun Jun 23 02:59:59 1940 EET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Warsaw Wed May 31 21:59:59 1922 GMT = Wed May 31 23:59:59 1922 EET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Warsaw Wed May 31 22:00:00 1922 GMT = Wed May 31 23:00:00 1922 MET isdst=0 CHANGED NONEGG FIX ABBREV. > Europe/Warsaw Sun Jun 23 00:59:59 1940 GMT = Sun Jun 23 01:59:59 1940 MET isdst=0 ============================================================================================================================== CHANGED EGGERT COLLAPSE < America/Asuncion Mon Apr 1 03:00:00 1974 GMT = Sun Mar 31 23:00:00 1974 EST isdst=0 CHANGED EGGERT COLLAPSE < America/Asuncion Mon Apr 1 03:59:59 1974 GMT = Sun Mar 31 23:59:59 1974 EST isdst=0 CHANGED EGGERT COLLAPSE < America/Asuncion Mon Apr 1 04:00:00 1974 GMT = Mon Apr 1 00:00:00 1974 AST isdst=0 CHANGED EGGERT COLLAPSE > America/Asuncion Mon Apr 1 03:00:00 1974 GMT = Sun Mar 31 23:00:00 1974 AST isdst=0 CHANGED EGGERT COLLAPSE < America/Barbados Fri Jan 1 03:58:00 1932 GMT = Thu Dec 31 23:58:00 1931 BMT isdst=0 CHANGED EGGERT COLLAPSE < America/Barbados Fri Jan 1 03:59:59 1932 GMT = Thu Dec 31 23:59:59 1931 BMT isdst=0 CHANGED EGGERT COLLAPSE < America/Barbados Fri Jan 1 04:00:00 1932 GMT = Fri Jan 1 00:00:00 1932 AST isdst=0 CHANGED EGGERT COLLAPSE > America/Barbados Fri Jan 1 03:58:00 1932 GMT = Thu Dec 31 23:58:00 1931 AST isdst=0 CHANGED EGGERT COLLAPSE < America/Belize Mon Apr 1 05:52:48 1912 GMT = Sun Mar 31 23:52:48 1912 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/Belize Mon Apr 1 05:59:59 1912 GMT = Sun Mar 31 23:59:59 1912 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/Belize Mon Apr 1 06:00:00 1912 GMT = Mon Apr 1 00:00:00 1912 CST isdst=0 CHANGED EGGERT COLLAPSE > America/Belize Mon Apr 1 05:52:48 1912 GMT = Sun Mar 31 23:52:48 1912 CST isdst=0 CHANGED EGGERT COLLAPSE < America/Costa_Rica Sat Jan 15 05:36:00 1921 GMT = Fri Jan 14 23:36:00 1921 SJMT isdst=0 CHANGED EGGERT COLLAPSE < America/Costa_Rica Sat Jan 15 05:59:59 1921 GMT = Fri Jan 14 23:59:59 1921 SJMT isdst=0 CHANGED EGGERT COLLAPSE < America/Costa_Rica Sat Jan 15 06:00:00 1921 GMT = Sat Jan 15 00:00:00 1921 CST isdst=0 CHANGED EGGERT COLLAPSE > America/Costa_Rica Sat Jan 15 05:36:00 1921 GMT = Fri Jan 14 23:36:00 1921 CST isdst=0 CHANGED EGGERT COLLAPSE < America/El_Salvador Sat Jan 1 05:56:48 1921 GMT = Fri Dec 31 23:56:48 1920 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/El_Salvador Sat Jan 1 05:59:59 1921 GMT = Fri Dec 31 23:59:59 1920 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/El_Salvador Sat Jan 1 06:00:00 1921 GMT = Sat Jan 1 00:00:00 1921 CST isdst=0 CHANGED EGGERT COLLAPSE > America/El_Salvador Sat Jan 1 05:56:48 1921 GMT = Fri Dec 31 23:56:48 1920 CST isdst=0 CHANGED EGGERT COLLAPSE < America/Managua Sun Feb 16 05:00:00 1975 GMT = Sat Feb 15 23:00:00 1975 EST isdst=0 CHANGED EGGERT COLLAPSE < America/Managua Sun Feb 16 05:59:59 1975 GMT = Sat Feb 15 23:59:59 1975 EST isdst=0 CHANGED EGGERT COLLAPSE < America/Managua Sun Feb 16 06:00:00 1975 GMT = Sun Feb 16 00:00:00 1975 CST isdst=0 CHANGED EGGERT COLLAPSE > America/Managua Sun Feb 16 05:00:00 1975 GMT = Sat Feb 15 23:00:00 1975 CST isdst=0 CHANGED EGGERT COLLAPSE < America/Port-au-Prince Wed Jan 24 16:49:00 1917 GMT = Wed Jan 24 11:49:00 1917 PPMT isdst=0 CHANGED EGGERT COLLAPSE < America/Port-au-Prince Wed Jan 24 16:59:59 1917 GMT = Wed Jan 24 11:59:59 1917 PPMT isdst=0 CHANGED EGGERT COLLAPSE < America/Port-au-Prince Wed Jan 24 17:00:00 1917 GMT = Wed Jan 24 12:00:00 1917 EST isdst=0 CHANGED EGGERT COLLAPSE > America/Port-au-Prince Wed Jan 24 16:49:00 1917 GMT = Wed Jan 24 11:49:00 1917 EST isdst=0 CHANGED EGGERT COLLAPSE < America/Regina Fri Sep 1 06:58:36 1905 GMT = Thu Aug 31 23:58:36 1905 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/Regina Fri Sep 1 06:59:59 1905 GMT = Thu Aug 31 23:59:59 1905 LMT isdst=0 CHANGED EGGERT COLLAPSE < America/Regina Fri Sep 1 07:00:00 1905 GMT = Fri Sep 1 00:00:00 1905 MST isdst=0 CHANGED EGGERT COLLAPSE > America/Regina Fri Sep 1 06:58:36 1905 GMT = Thu Aug 31 23:58:36 1905 MST isdst=0 CHANGED EGGERT COLLAPSE < America/Santo_Domingo Sat Apr 1 16:40:00 1933 GMT = Sat Apr 1 11:40:00 1933 SDMT isdst=0 CHANGED EGGERT COLLAPSE < America/Santo_Domingo Sat Apr 1 16:59:59 1933 GMT = Sat Apr 1 11:59:59 1933 SDMT isdst=0 CHANGED EGGERT COLLAPSE < America/Santo_Domingo Sat Apr 1 17:00:00 1933 GMT = Sat Apr 1 12:00:00 1933 EST isdst=0 CHANGED EGGERT COLLAPSE > America/Santo_Domingo Sat Apr 1 16:40:00 1933 GMT = Sat Apr 1 11:40:00 1933 EST isdst=0 CHANGED EGGERT COLLAPSE < Asia/Amman Wed Dec 31 21:36:16 1930 GMT = Wed Dec 31 23:36:16 1930 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Amman Wed Dec 31 21:59:59 1930 GMT = Wed Dec 31 23:59:59 1930 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Amman Wed Dec 31 22:00:00 1930 GMT = Thu Jan 1 00:00:00 1931 EET isdst=0 CHANGED EGGERT COLLAPSE > Asia/Amman Wed Dec 31 21:36:16 1930 GMT = Wed Dec 31 23:36:16 1930 EET isdst=0 CHANGED EGGERT COLLAPSE < Asia/Damascus Wed Dec 31 21:34:48 1919 GMT = Wed Dec 31 23:34:48 1919 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Damascus Wed Dec 31 21:59:59 1919 GMT = Wed Dec 31 23:59:59 1919 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Damascus Wed Dec 31 22:00:00 1919 GMT = Thu Jan 1 00:00:00 1920 EET isdst=0 CHANGED EGGERT COLLAPSE > Asia/Damascus Wed Dec 31 21:34:48 1919 GMT = Wed Dec 31 23:34:48 1919 EET isdst=0 CHANGED EGGERT COLLAPSE < Asia/Jerusalem Mon Dec 31 21:39:00 1917 GMT = Mon Dec 31 23:39:00 1917 JMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Jerusalem Mon Dec 31 21:59:59 1917 GMT = Mon Dec 31 23:59:59 1917 JMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Jerusalem Mon Dec 31 22:00:00 1917 GMT = Tue Jan 1 00:00:00 1918 IST isdst=0 CHANGED EGGERT COLLAPSE > Asia/Jerusalem Mon Dec 31 21:39:00 1917 GMT = Mon Dec 31 23:39:00 1917 IST isdst=0 CHANGED EGGERT COLLAPSE < Asia/Nicosia Sun Nov 13 21:46:32 1921 GMT = Sun Nov 13 23:46:32 1921 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Nicosia Sun Nov 13 21:59:59 1921 GMT = Sun Nov 13 23:59:59 1921 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Nicosia Sun Nov 13 22:00:00 1921 GMT = Mon Nov 14 00:00:00 1921 EET isdst=0 CHANGED EGGERT COLLAPSE > Asia/Nicosia Sun Nov 13 21:46:32 1921 GMT = Sun Nov 13 23:46:32 1921 EET isdst=0 CHANGED EGGERT COLLAPSE < Asia/Shanghai Sat Dec 31 15:54:08 1927 GMT = Sat Dec 31 23:54:08 1927 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Shanghai Sat Dec 31 15:59:59 1927 GMT = Sat Dec 31 23:59:59 1927 LMT isdst=0 CHANGED EGGERT COLLAPSE < Asia/Shanghai Sat Dec 31 16:00:00 1927 GMT = Sun Jan 1 00:00:00 1928 CST isdst=0 CHANGED EGGERT COLLAPSE > Asia/Shanghai Sat Dec 31 15:54:08 1927 GMT = Sat Dec 31 23:54:08 1927 CST isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Azores Wed May 24 01:55:00 1911 GMT = Tue May 23 23:55:00 1911 HMT isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Azores Wed May 24 01:59:59 1911 GMT = Tue May 23 23:59:59 1911 HMT isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Azores Wed May 24 02:00:00 1911 GMT = Wed May 24 00:00:00 1911 ACT isdst=0 CHANGED EGGERT COLLAPSE > Atlantic/Azores Wed May 24 01:55:00 1911 GMT = Tue May 23 23:55:00 1911 ACT isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Stanley Tue Mar 12 03:51:00 1912 GMT = Mon Mar 11 23:51:00 1912 SMT isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Stanley Tue Mar 12 03:59:59 1912 GMT = Mon Mar 11 23:59:59 1912 SMT isdst=0 CHANGED EGGERT COLLAPSE < Atlantic/Stanley Tue Mar 12 04:00:00 1912 GMT = Tue Mar 12 00:00:00 1912 AST isdst=0 CHANGED EGGERT COLLAPSE > Atlantic/Stanley Tue Mar 12 03:51:00 1912 GMT = Mon Mar 11 23:51:00 1912 AST isdst=0 CHANGED EGGERT FIX ABBREV. < Europe/Brussels Sat Mar 1 22:00:00 1919 GMT = Sat Mar 1 22:00:00 1919 MET isdst=0 CHANGED EGGERT FIX ABBREV. < Europe/Brussels Sat Mar 1 22:59:59 1919 GMT = Sat Mar 1 22:59:59 1919 MET isdst=0 CHANGED EGGERT FIX ABBREV. > Europe/Brussels Sat Mar 1 22:00:00 1919 GMT = Sat Mar 1 22:00:00 1919 WET isdst=0 CHANGED EGGERT FIX ABBREV. > Europe/Brussels Sat Mar 1 22:59:59 1919 GMT = Sat Mar 1 22:59:59 1919 WET isdst=0 CHANGED EGGERT COLLAPSE < Pacific/Noumea Fri Jan 12 12:54:12 1912 GMT = Fri Jan 12 23:54:12 1912 LMT isdst=0 CHANGED EGGERT COLLAPSE < Pacific/Noumea Fri Jan 12 12:59:59 1912 GMT = Fri Jan 12 23:59:59 1912 LMT isdst=0 cHANGED EGGERT COLLAPSE < Pacific/Noumea Fri Jan 12 13:00:00 1912 GMT = Sat Jan 13 00:00:00 1912 NCST isdst=0 CHANGED EGGERT COLLAPSE > Pacific/Noumea Fri Jan 12 12:54:12 1912 GMT = Fri Jan 12 23:54:12 1912 NCST isdst=0