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Re: tz behavior difference TZif vs. TZif2
by Robbin Kawabata March 30, 2006

March 30, 2006

After building zic.c with the changes of 3/25/06 (which fixed a fencepost error), and comparing the TZif zoneinfo binaries with the TZif2 binaries, most timezones were identical (modulo the "TZif" vs. "TZif2" strings). However, seven timezones below had other differences: ./Africa/Windhoek ./Europe/London (links ./Europe/Belfast, ./GB, ./GB-Eire) ./Europe/Gibraltar ./Europe/Rome (links ./Europe/Vatican, ./Europe/San_Marino) ./Europe/Malta ./Europe/Madrid ./America/Juneau Should the TZif vs. TZif2 binaries compare exactly except for the '2' in "TZif2"? Details (cmp -l output): ./Africa/Windhoek cmp: EOF on ./Africa/Windhoek 5 0 62 44 23 27 540 1 23 560 0 127 561 0 101 562 0 124 ./Europe/London cmp: EOF on ./Europe/London 5 0 62 1120 3 4 1121 5 6 1140 4 5 1141 5 6 1142 4 5 1143 5 6 1144 4 5 1145 5 6 1146 4 5 1147 5 6 1148 4 5 1149 5 6 1150 4 5 1151 5 6 1152 4 5 1153 5 6 1154 4 5 1155 5 6 1156 4 5 1157 5 6 1158 4 5 1159 5 6 1160 4 5 1161 5 6 1162 4 5 1163 5 6 1164 4 5 1165 5 6 1166 4 5 1167 5 6 1168 4 5 1169 5 6 1170 6 3 1171 4 5 1172 5 6 1173 4 5 1174 5 6 1175 4 5 1176 5 6 1177 4 5 1178 5 6 1179 4 5 1180 5 6 1181 4 5 1182 5 6 1183 4 5 1184 5 6 1185 4 5 1186 5 6 1187 4 5 1188 5 6 1189 4 5 1190 5 6 1191 4 5 1192 5 6 1193 4 5 1194 5 6 1195 4 5 1196 5 6 1197 4 5 1198 5 6 1199 4 5 1200 5 6 1201 4 5 1202 5 6 1203 4 5 1204 5 6 1205 4 5 1206 5 6 1207 4 5 1208 5 6 1209 4 5 1210 5 6 1211 4 5 1212 5 6 1213 4 5 1214 5 6 1215 4 5 1216 5 6 1217 4 5 1218 5 6 1219 4 5 1220 5 6 1221 4 5 1222 5 6 1223 4 5 1224 5 6 1225 4 5 1226 5 6 1227 4 5 1228 5 6 1229 4 5 1230 5 6 1231 4 5 1232 5 6 1233 4 5 1234 5 6 1235 4 5 1236 5 6 1237 4 5 1238 5 6 1239 4 5 1240 5 6 1241 4 5 1242 5 6 1243 4 5 1244 5 6 1245 4 5 1246 5 6 1247 4 5 1248 5 6 1249 4 5 1250 5 6 1251 4 5 1252 5 6 1253 4 5 1254 5 6 1275 16 0 1276 20 0 1278 0 4 1283 1 0 1287 0 16 1288 0 20 1289 0 1 1290 4 0 1314 1 0 1316 0 1 1321 1 0 1323 0 1 ./Europe/Gibraltar cmp: EOF on ./Europe/Gibraltar 5 0 62 24 6 7 28 6 7 40 6 7 917 3 4 918 4 5 919 5 6 920 4 5 921 5 6 922 4 5 923 5 6 924 4 5 925 5 6 926 4 5 927 5 6 928 4 5 929 5 6 930 4 5 931 5 6 932 4 5 933 5 6 934 4 5 935 5 6 936 4 5 937 5 6 938 4 5 939 5 6 940 4 5 941 5 6 942 4 5 943 5 6 944 4 5 945 5 6 946 4 5 947 5 6 948 4 5 949 5 6 950 4 5 951 5 6 952 4 5 953 5 6 954 4 5 955 5 6 956 4 5 957 5 6 958 4 5 959 5 6 960 4 5 961 5 6 962 4 5 963 5 6 964 4 5 965 5 6 966 4 5 967 5 6 968 4 5 969 5 6 970 4 5 971 5 6 972 4 5 973 5 6 974 4 5 975 5 6 976 4 5 977 5 6 978 4 5 979 5 6 980 4 5 981 5 6 982 4 5 983 5 6 984 4 5 985 5 6 986 4 5 987 5 6 988 4 5 989 5 6 990 4 5 991 5 6 992 4 5 993 5 6 994 4 5 995 5 6 996 4 5 997 5 6 998 4 5 999 5 6 1000 4 5 1001 5 6 1002 4 5 1003 5 6 1004 4 5 1005 5 6 1006 4 5 1007 5 6 1008 4 5 1009 5 6 1010 4 5 1011 5 6 1012 4 5 1013 5 6 1014 4 5 1015 5 6 1016 4 5 1017 5 6 1018 4 5 1019 5 6 1020 4 5 1021 5 6 1022 4 5 1023 5 6 1024 4 5 1025 5 6 1026 4 5 1027 5 6 1028 4 5 1029 5 6 1050 16 0 1051 20 0 1053 15 4 1056 34 16 1057 40 20 1058 1 0 1059 21 15 1062 16 34 1063 20 40 1064 0 1 1065 15 21 1066 102 0 1067 123 0 1068 124 16 1069 0 20 1070 107 0 1071 115 15 1072 124 102 1073 0 123 1074 102 124 1075 104 0 1076 123 107 1077 124 115 1078 0 124 1079 103 0 1080 105 102 1081 124 104 1082 0 123 1083 103 124 1084 105 0 1085 123 103 1086 124 105 1087 0 124 1088 1 0 1089 1 103 1090 1 105 1091 0 123 1092 1 124 1093 1 0 1094 0 1 1095 0 1 1096 0 1 1098 1 0 ./Europe/Rome cmp: EOF on ./Europe/Rome 5 0 62 740 2 3 742 2 3 750 2 3 751 3 2 752 2 3 753 3 2 754 2 3 755 3 2 756 2 3 757 3 2 758 2 3 759 3 2 760 2 3 761 3 2 762 2 3 763 3 2 764 2 3 765 3 2 766 2 3 767 3 2 778 3 2 909 34 16 910 40 20 911 1 0 912 0 5 915 16 34 916 20 40 917 0 1 918 5 0 ./Europe/Malta cmp: EOF on ./Europe/Malta 5 0 62 733 2 3 741 2 3 742 3 2 743 2 3 744 3 2 745 2 3 746 3 2 747 2 3 748 3 2 749 2 3 750 3 2 751 2 3 752 3 2 753 2 3 754 3 2 759 2 3 760 3 2 761 2 3 762 3 2 763 2 3 764 3 2 765 2 3 766 3 2 767 2 3 768 3 2 769 2 3 770 3 2 899 34 16 900 40 20 901 1 0 902 0 5 905 16 34 906 20 40 907 0 1 908 5 0 ./Europe/Madrid cmp: EOF on ./Europe/Madrid 5 0 62 24 10 11 28 10 11 40 10 11 729 5 6 730 4 5 731 5 6 732 4 5 733 5 6 734 4 5 735 5 6 736 4 5 737 5 6 738 4 5 739 5 6 740 4 5 741 5 6 742 6 7 743 7 10 744 6 7 745 7 10 746 6 7 747 7 10 748 6 7 749 7 10 750 6 7 751 7 10 752 6 7 753 7 10 754 6 7 755 7 10 756 6 7 757 7 10 758 6 7 759 7 10 760 6 7 761 7 10 762 6 7 763 7 10 764 6 7 765 7 10 766 6 7 767 7 10 768 6 7 769 7 10 770 6 7 771 7 10 772 6 7 773 7 10 774 6 7 775 7 10 776 6 7 777 7 10 778 6 7 779 7 10 780 6 7 781 7 10 782 6 7 783 7 10 784 6 7 785 7 10 786 6 7 787 7 10 788 6 7 789 7 10 790 6 7 791 7 10 792 6 7 793 7 10 794 6 7 795 7 10 796 6 7 797 7 10 798 6 7 799 7 10 800 6 7 801 7 10 802 6 7 803 7 10 804 6 7 805 7 10 806 6 7 807 7 10 808 6 7 809 7 10 810 6 7 811 7 10 812 6 7 813 7 10 814 6 7 815 7 10 816 6 7 817 7 10 818 6 7 819 7 10 820 6 7 821 7 10 822 6 7 823 7 10 824 6 7 825 7 10 826 6 7 827 7 10 828 6 7 829 7 10 830 6 7 831 7 10 832 6 7 833 7 10 834 6 7 835 7 10 836 6 7 837 7 10 838 6 7 839 7 10 840 6 7 841 7 10 842 6 7 843 7 10 844 6 7 845 7 10 846 6 7 847 7 10 848 6 7 849 7 10 850 6 7 851 7 10 852 6 7 853 7 10 854 6 7 855 7 10 856 6 7 857 7 10 858 6 7 859 7 10 886 34 0 887 40 0 888 1 0 889 16 5 892 16 34 893 20 40 894 0 1 895 23 16 898 34 16 899 40 20 900 1 0 901 16 23 904 16 34 905 20 40 906 0 1 907 23 16 908 127 0 909 105 0 910 123 16 911 124 20 913 127 23 914 105 127 915 124 105 916 0 123 917 127 124 918 105 0 919 115 127 920 124 105 921 0 124 922 103 0 923 105 127 924 123 105 925 124 115 926 0 124 927 103 0 928 105 103 929 124 105 930 0 123 931 1 124 932 1 0 933 1 103 934 0 105 935 0 124 939 0 1 944 0 1 946 1 0 ./America/Juneau cmp: EOF on ./America/Juneau 5 0 62 24 10 7 28 10 7 40 10 7 44 42 36 646 7 6 647 6 5 648 7 6 649 6 5 650 7 6 651 6 5 652 7 6 653 6 5 654 7 6 655 6 5 656 7 6 657 6 5 658 7 6 659 6 5 660 7 6 661 6 5 662 7 6 663 6 5 664 7 6 665 6 5 666 7 6 667 6 5 668 7 6 669 6 5 670 7 6 671 6 5 672 7 6 673 6 5 674 7 6 675 6 5 676 7 6 677 6 5 678 7 6 679 6 5 680 7 6 681 6 5 682 7 6 683 6 5 684 7 6 685 6 5 686 7 6 687 6 5 688 7 6 689 6 5 690 7 6 691 6 5 692 7 6 693 6 5 694 7 6 695 6 5 696 7 6 697 6 5 698 7 6 699 6 5 700 7 6 701 6 5 702 7 6 703 6 5 704 7 6 705 6 5 706 7 6 707 6 5 708 7 6 709 6 5 710 7 6 711 6 5 712 7 6 713 6 5 714 7 6 715 6 5 716 7 6 717 6 5 718 7 6 719 6 5 720 7 6 721 6 5 722 7 6 723 6 5 724 7 6 725 6 5 726 7 6 727 6 5 728 7 6 729 6 5 730 7 6 731 6 5 732 7 6 733 6 5 734 7 6 735 6 5 736 7 6 737 6 5 738 7 6 739 6 5 740 7 6 741 6 5 742 7 6 743 6 5 744 7 6 745 6 5 746 7 6 747 6 5 748 7 6 749 6 5 750 7 6 751 6 5 752 7 6 753 6 5 754 7 6 793 217 201 794 200 160 795 1 0 796 30 31 797 377 120 798 377 123 799 201 124 800 160 0 801 0 120 802 35 127 803 120 124 804 123 0 805 124 120 806 0 120 807 120 124 808 127 0 809 124 120 810 0 104 811 120 124 812 120 0 813 124 131 814 0 123 815 120 124 816 104 0 817 124 101 818 0 113 819 131 104 820 123 124 821 124 0 822 0 101 823 131 113 824 104 123 827 101 0 828 113 0 829 104 1 830 124 0 832 101 0 833 113 0 834 123 0 835 124 0 836 0 1 839 1 0 841 0 124 842 0 132 843 0 151 844 0 146 845 0 62 847 1 0

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links for DOT ruling on Indiana time zone boundaries
by Nathan Stratton Treadway March 30, 2006

March 30, 2006

In the "northamerica" file from tzdata2006b.tar.gz, there is a link http://dmses.dot.gov/docimages/pdf95/382329_web.pdf to the DOT Final Rule document for the timezone boundaries. That particular version of the document is > 2.7 MiB in size and 61 pages long. You might consider including one or more these URLs instead of or in addition to that one: http://www.dot.gov/affairs/dot0406.htm Basic HTML annoucment of the final decision on Indiana Time Zone proposals. http://dmses.dot.gov/docimages/p84/382609.pdf Federal Register publication of the full text of the Final Rule (134kiB, 18 pages). http://dms.dot.gov/search/document.cfm?documentid=382609&docketid=22114 Docket Management System HTML index/summary page for the Federal Register version (contains a link to the previous URL, as well as various info on the document and a link to the DMS search page). http://dms.dot.gov/search/document.cfm?documentid=382329&docketid=22114 DMS index/summary page for the "382329_web.pdf" document currently mentioned in the northamerica file. Thanks. Nathan ---------------------------------------------------------------------------- Nathan Stratton Treadway - nathanst(a)ontko.com - Mid-Atlantic region Ray Ontko & Co. - Software consulting services - http://www.ontko.com/ GPG Key: http://www.ontko.com/~nathanst/gpg_key.txt ID: 1023D/ECFB6239 Key fingerprint = 6AD8 485E 20B9 5C71 231C 0C32 15F3 ADCD ECFB 6239

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Tunisia: daylight saving from 2006 and on
by nic＠ati.tn March 28, 2006

March 28, 2006

Dear Sir/Madam, We are the network information center of the Tunisian country. From 2006 and on, Tunisia will observe daylight saving time. The daylight saving begun on the last Sunday of March (March 26 for this year 2006) at 2:00 am and will end on the last Sunday of october (october 29 for this year 2006) at 3:00 am. The daylight saving time will be the same each year: Beginning : the last Sunday of march at 2:00am Ending : the last Sunday of october at 3:00 am Here is the link to the tunisian press agency whom announced this: http://www.tap.info.tn/en/index.php?option=com_content&task=view&id=1188&Ite mid=50 would you please update your Africa/tunisia time zone taking into consideration these changes. Waiting for you feed-back, Regards, _____________________________________________________ Atef LOUKIL Tunisian Internet Agency, ATI-LIR&NIC Departement 13, Rue Jugurtha Mutuelleville - 1002 Tunis - Tunisia Phone: +216 71 846 100 ext.236 Fax: +216 71 846 600 http://www.ati.tn

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Change in timezone source file
by dindar＠ce.sharif.edu March 28, 2006

March 28, 2006

Hi as the law of Timezone in Iran has been changed I've edited the file and submitting the changes to you. hope you make it worldwide usable. Saleh Dindar.

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Re: Handling %s format strings
by kennykb＠crd.ge.com March 27, 2006

March 27, 2006

eggert(a)cs.ucla.edu said: > Which implementation is this? Is this a parser of tz data that is > written in Tcl, or is written in some other language and is commonly > available in Tcl? If so, I'd like to mention it in tz-link.htm As of Tcl 8.5 (now in alpha release), Tcl includes in its distribution a set of files that are an ASCII version of tzdata, and Tcl/C code to parse and format date/time strings using these as the time zone reference. There is a parser for the tz data written in Tcl supplied as part of this distribution in the 'tools' directory; the parser is intended primarily for use by developers of the Tcl system itself but can obviously be used by system administrators and others who wish to keep their tz data up to date between installing Tcl releases. Tcl is also capable of reading the binary zoneinfo files (and does so if its own tz data is not installed). The Tcl Improvement Proposal that put this material into the Tcl core can be found at http://tip.tcl.tk/173.html, and the manual page for the revised 'clock' command is at http://www.tcl.tk/man/tcl8.5/TclCmd/clock.htm The current alpha release of Tcl 8.5 is at http://www.tcl.tk/software/tcltk/8.5.html If you want to review the code of Tcl's 'zic' file parser, the CVS HEAD of the source file is at http://cvs.sourceforge.net/viewcvs.py/*checkout*/tcl/tcl/tools/tclZIC.tcl?c… 8.5a4 should be out Real Soon Now (the release manager keeps bugging me about bugs, and I'm going to finish this message and go off to fix some non-clock-related ones). -- 73 de ke9tv/2, Kevin KENNY GE Corporate Research & Development kennykb(a)crd.ge.com P. O. Box 8, Bldg. K-1, Rm. 5B36A Schenectady, New York 12301-0008 USA

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Re: Handling %s format strings
by kennykb＠crd.ge.com March 27, 2006

March 27, 2006

eggert(a)cs.ucla.edu said: > it's assumed that you start off in standard time, and that you take > the rule's first abbreviation that applies to standard time. Good, I got it right in Tcl! I seem to recall that the 'zic' man page had something about this. Either that or I took the Star Wars approach, "use the source, Luke!" -- 73 de ke9tv/2, Kevin KENNY GE Corporate Research & Development kennykb(a)crd.ge.com P. O. Box 8, Bldg. K-1, Rm. 5B36A Schenectady, New York 12301-0008 USA

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Handling %s format strings
by Philip Ross March 27, 2006

March 27, 2006

I'm the developer of TZInfo (http://tzinfo.rubyforge.org/) a Ruby library that uses the tz database (thanks for the link on twinsun.com by the way). I'm running into an issue where I'm unable to determine what the zone name is in cases where %s is used as the entire format string. This happens in the following zones: Africa/Accra Africa/Freetown Europe/Amsterdam Europe/Gibraltar Europe/London Europe/Moscow Take Africa/Accra as an example. Starting from 1918, this zone uses the Ghana rules with a %s format string. The Ghana rules only start to be defined from 1936. Europe/London contains two examples of the problem. The first happens similarly to Africa/Accra. LMT ends in 1847. The next period has a format of %s, but the first rule in GB-Eire doesn't start until 1916. The second example is with the period starting in 1971. Again this has a format of %s but a first rule starting in 1972. Basically, my problem is in dealing with the gap until the first rule/transition within a period of the zones. How should I be interpreting the data in these cases? Thanks, Philip Ross

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more proposed UK legislation to change the clocks
by Peter Ilieve March 27, 2006

March 27, 2006

There as a comment piece in the Independent (a UK newspaper) today that said that Lord Tanlaw has proposed changing the UK's timezone. The Independent only makes such stuff available on-line for a fee, but you can see the start of the piece at <http://comment.independent.co.uk/commentators/ article353873.ece>. The Cambridge mathematician mentioned is presumably Joseph Myers. I've looked on the UK Parliament website and it seems Lord Tanlaw introduced his Lighter Evenings (Experiment) Bill on 30 November last year. The Bill itself and the noble Lord's explanatory notes can be found linked from <http://www.publications.parliament.uk/pa/ld200506/ldbills/ 048/2006048.htm>. The initial debate, such as it was, occupies four lines of Hansard at <http://www.publications.parliament.uk/pa/ld199900/ldhansrd/pdvn/ lds05/text/51130-04.htm#topichd_4>. (To be fair, the first reading of a Bill is usually like this, just a formality.) It came up for second reading on 24 March, and the much more substantial debate can be found at <http://www.publications.parliament.uk/pa/ld199900/ldhansrd/pdvn/ lds06/text/60324-01.htm#60324-01_head0>. It was approved and will now go to a committee of the whole house for its committee stage. If it gets past that it will go to the Commons. The Bill proposes to move England's time one hour ahead in winter and summer for an experimental period starting in October this year and ending in October 2009. Scotland would be allowed to opt in to this experiment by an amendment to the Scotland Act (timezone matters are currently reserved to Westminster so Scotland can't do it's own thing without such an amendment). Wales and Northern Ireland would similarly be allowed to opt in. Lord Tanlaw has in the past tried and failed to change the legal definition of the UK's standard time from GMT to UTC. Personally I don't think he will be any more successful this time. At the Bill's current rate of progress it's very hard to see any experiment starting this year even if the principle is accepted. Peter Ilieve peter(a)aldie.co.uk

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DST in Tunisia 2006
by Weltzeituhr March 27, 2006

March 27, 2006

Several of my users have reported that Tunisia observe DST in 2006 again: http://www.infotunisie.com/2006/03/240306-7.html (in French language) Best regards Klaus Marten http://www.weltzeituhr.de

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Asia/Tehran tz information
by Ali Sharifpour March 26, 2006

March 26, 2006

Hello time zone mailing list Iran as of this year does not observe Daylight Savings. I read that this is valid from 2006-2009 on timeanddate.com but I am not sure of its reference. I am not sure if this has been updated in the most recent tz but in my updated OS X install it is not, along with several other web sites (other than timeanddate.com) I apologize if it has been already updated. Anyone updating their OS X tz themselves? Regards. Ali Sharifpour __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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