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tzcode standard C patch
by Torsten Duwe July 25, 2000

July 25, 2000

Dear Mr. Olson (hope "tz" is a synonym, not a list :-) , attached you find the patch we at Caldera are using for quite a while now to compile the tzcode under Linux, namely with the GNU C library, version 2 and up. I strongly believe the old code compiles on other, "tradidional" Unix-like systems (if it does so at all without changes) because of their excessive backward compatibility, that the GNU C library intentionally has not. My manuals (GNU C library and NetBSD C Library) state that strerror/perror/<errno.h> comply to ANSI X3.159-1989 (``ANSI C'') BSD 4.3, POSIX, X/OPEN . I have carefully made the changes only to the "#ifdef unix" case, but I think it is applicable in general. Thank you for your attention, Torsten Duwe --- zic.c~ Thu May 28 15:56:07 1998 +++ zic.c Mon Oct 12 17:04:02 1998 @@ -9,6 +9,7 @@ #include "tzfile.h" #ifdef unix #include "sys/stat.h" /* for umask manifest constants */ +#include <errno.h> #endif /* defined unix */ /* @@ -377,7 +378,9 @@ strerror(errnum) int errnum; { +#ifndef unix extern char * sys_errlist[]; +#endif extern int sys_nerr; return (errnum > 0 && errnum <= sys_nerr) ?

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Israel Timezone -- Changes for 2000-2002 and New Dates for 2003-2004
by Ephraim Silverberg July 25, 2000

July 25, 2000

On July 19, 2000, the Israeli Parliament [Knesset] has passed a statute amending the dates for 2000-2002 and setting new dates for 2003-2004. Attached are the context diffs of the 'asia' file of tzdata2000d.tar.gz showing the start/end dates of Daylight Savings Time in Israel from 2000 until 2004 inclusive. -----------------------------------CUT-HERE------------------------------------ *** asia Tue Mar 14 16:39:25 2000 --- asia.new Tue Jul 25 10:59:59 2000 *************** *** 526,532 **** Rule Zion 1988 only - Sep 3 0:00 0 S # From Ephraim Silverberg <ephraim(a)cs.huji.ac.il> ! # (1997-03-04, 1998-03-16, 1998-12-28, and 2000-01-17): # According to the Office of the Secretary General of the Ministry of # Interior, there is NO set rule for Daylight-Savings/Standard time changes. --- 526,532 ---- Rule Zion 1988 only - Sep 3 0:00 0 S # From Ephraim Silverberg <ephraim(a)cs.huji.ac.il> ! # (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17 and 2000-07-25): # According to the Office of the Secretary General of the Ministry of # Interior, there is NO set rule for Daylight-Savings/Standard time changes. *************** *** 537,550 **** # Saturday night from midnight daylight savings time to 11 p.m. standard # time. 1996 is an exception to this rule where the change back to standard # time took place on Sunday night instead of Saturday night to avoid ! # conflicts with the Jewish New Year. Starting in 1999, the change to ! # daylight savings time will still be on a Friday morning but from # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time ! # will now also be on a Friday morning from 2 a.m. IDT to 1 a.m. IST for ! # 1999 only. In the years from 2000 to 2002, the change back will be from ! # 2 a.m. IDT to 1 a.m. IST the morning after the Jewish festival of ! # Shmini Atzeret (i.e. the morning of the 23rd of Tishrei in the lunar ! # Hebrew calendar). # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 1989 only - Apr 30 0:00 1:00 D --- 537,555 ---- # Saturday night from midnight daylight savings time to 11 p.m. standard # time. 1996 is an exception to this rule where the change back to standard # time took place on Sunday night instead of Saturday night to avoid ! # conflicts with the Jewish New Year. In 1999, the change to ! # daylight savings time was still be on a Friday morning but from # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time ! # was also be on a Friday morning from 2 a.m. IDT to 1 a.m. IST for ! # 1999 only. In the year 2000, the change to daylight savings time was ! # similar to 1999, but although the change back will be on a Friday, it ! # will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all ! # changes to/from will take place at 1 a.m. old time, but now there is no ! # rule as to what day of the week it will take place in as the start date ! # (except in 2003) is the night after the Passover Seder (i.e. the eve ! # of the 16th of Nisan in the lunar Hebrew calendar) and the end date ! # (except in 2002) is three nights before Yom Kippur [Day of Atonement] ! # (the eve of the 7th of Tishrei in the lunar Hebrew calendar). # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 1989 only - Apr 30 0:00 1:00 D *************** *** 592,620 **** Rule Zion 1999 only - Apr 2 2:00 1:00 D Rule Zion 1999 only - Sep 3 2:00 0 S ! # Minister of Interior, Natan Sharansky, has announced the dates for ! # the years 2000-2002. However, sources inside the ministry have noted ! # that the end date of 2000 and both dates of 2001-2002 should be regarded ! # as tentative pending final approval. # ! # The official announcement for the years 2000-2002 can be viewed at: # ! # ftp://ftp.huji.ac.il/pub/tz/announcements/2000-2002.ps.gz # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 2000 only - Apr 14 2:00 1:00 D ! Rule Zion 2000 only - Oct 22 2:00 0 S ! Rule Zion 2001 only - Apr 6 2:00 1:00 D ! Rule Zion 2001 only - Oct 10 2:00 0 S ! Rule Zion 2002 only - Mar 29 2:00 1:00 D ! Rule Zion 2002 only - Sep 29 2:00 0 S # From Paul Eggert (2000-01-17): ! # Here are guesses for rules after 2002. # They are probably wrong, but they are more likely than no DST at all. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S ! Rule Zion 2003 max - Mar Fri>=25 2:00 1:00 D ! Rule Zion 2003 max - Oct 1 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Jerusalem 2:20:56 - LMT 1880 --- 597,633 ---- Rule Zion 1999 only - Apr 2 2:00 1:00 D Rule Zion 1999 only - Sep 3 2:00 0 S ! # The Knesset Interior Committee has changed the dates for 2000 for ! # the third time in just over a year and have set new dates for the ! # years 2001-2004 as well. # ! # The official announcement for the start date of 2000 can be viewed at: # ! # ftp://ftp.huji.ac.il/pub/tz/announcements/2000-start.ps.gz ! # ! # The official announcement for the end date of 2000 and the dates ! # for the years 2001-2004 can be viewed at: ! # ! # ftp://ftp.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Zion 2000 only - Apr 14 2:00 1:00 D ! Rule Zion 2000 only - Oct 6 1:00 0 S ! Rule Zion 2001 only - Apr 9 1:00 1:00 D ! Rule Zion 2001 only - Sep 24 1:00 0 S ! Rule Zion 2002 only - Mar 29 1:00 1:00 D ! Rule Zion 2002 only - Oct 7 1:00 0 S ! Rule Zion 2003 only - Mar 28 1:00 1:00 D ! Rule Zion 2003 only - Oct 3 1:00 0 S ! Rule Zion 2004 only - Apr 7 1:00 1:00 D ! Rule Zion 2004 only - Sep 22 1:00 0 S # From Paul Eggert (2000-01-17): ! # Here are guesses for rules after 2004. # They are probably wrong, but they are more likely than no DST at all. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S ! Rule Zion 2005 max - Apr 1 1:00 1:00 D ! Rule Zion 2005 max - Oct 1 1:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Jerusalem 2:20:56 - LMT 1880 ----------------------------------UNTIL-HERE----------------------------------- ___________________________________________________________________________ Ephraim Silverberg, CSE System Group, Phone number: 972-2-6585521 Hebrew University, Jerusalem, Israel. Fax number: 972-2-6585439 WWW: http://www.cs.huji.ac.il/~ephraim E-mail: ephraim(a)cse.huji.ac.il

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archive
by McKinstry, Alastair July 19, 2000

July 19, 2000

get latest/781 get latest/782 get latest/783

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archive
by McKinstry, Alastair July 19, 2000

July 19, 2000

ls latest

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archive help
by McKinstry, Alastair July 19, 2000

July 19, 2000

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A mystery of Earth's wobble solved: It's the ocean (fwd)
by Markus Kuhn July 18, 2000

July 18, 2000

Here something for those time geeks interested in the cause of the difference between UT0 and UT1. Markus

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Thank you, and a brief note on time zone offsets
by Russ Allbery July 16, 2000

July 16, 2000

I've just spent a very enjoyable and interesting part of a couple of days reading the full archives of the tz mailing list. Thank you, all! I now know considerably more about a rather fascinating topic than I did before. (And having the full archives going back fifteen years all available, in a format that my mail reader can even thread, sort, and score for me, is very nice; I'll have to bear that in mind for any mailing lists I may run in the future.) In partial thanks for all of the good information, here's a gotcha that I don't believe has been mentioned on this mailing list previously. There has been some previous discussion about the preferred form of representing time zone offsets; RFC 822 uses [+-]HHMM, while some other formats put a colon between the hours and the minutes. The previous discussion didn't seem to turn up much reason for preferring one over the other, and some general preference for leaving out the colon for a shorter format. I became interested in this whole topic in the process of standardizing INN's internal generation of Date headers. When I started on that, I discovered that someone who had been (re-)implementing support for generation of Date headers in the local time zone rather than UTC had taken the offset from UTC in seconds and, to convert to an offset, simply divided by 36! Thankfully, this never made it into a released version (and it's now fixed), but the RFC 822 format, combined with the relative scarcity of time zones whose offsets aren't even numbers of hours, actively encourages this mistake. Seconds offset from GMT divided by 36 and printed out as a number is actually correct for hour offset time zones, but gives e.g. -0250 instead of -0230 for other time zones, because rather than HHMM, it's actually fractional hours multiplied by 100. Had RFC 822 required the colon between hours and minutes, it would have made it clear that they were two separate numbers and would probably have prevented this mistake. As always with standards, it's best if a cursory inspection of the results suggests the right implementation, or at least doesn't suggest a mistaken implementation, as a lot of code gets written without actually referring to the real standard. :/ -- Russ Allbery (rra(a)stanford.edu) <http://www.eyrie.org/~eagle/>

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help
by McKinstry, Alastair July 13, 2000

July 13, 2000

subscribe -- Alastair McKinstry - AlphaServer SC Engineering Compaq Computer Corporation, Ballybrit Business Park, Galway, Ireland Phone: +35391 754521 FAX +353 91 754435 <alastair.mckinstry(a)compaq.com>

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Bulletin C number 20 (fwd)
by Markus Kuhn July 12, 2000

July 12, 2000

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Bulletin C number 20
by iers＠hpopa.obspm.fr July 12, 2000

July 12, 2000

INTERNATIONAL EARTH ROTATION SERVICE (IERS) SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE BUREAU CENTRAL DE L'IERS OBSERVATOIRE DE PARIS 61, Av. de l'Observatoire 75014 PARIS (France) Tel. : 33 (0) 1 40 51 22 26 FAX : 33 (0) 1 40 51 22 91 Internet : iers(a)obspm.fr Paris, 12 Juillet 2000 Bulletin C 20 To authorities responsible for the measurement and distribution of time INFORMATION ON UTC - TAI No positive leap second will be introduced at the end of December 2000. The difference between UTC and the International Atomic Time TAI is : from 1999 January 1, 0h UTC, until further notice : UTC-TAI = - 32 s Leap seconds can be introduced in UTC at the end of the months of December or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every six months, either to announce a time step in UTC, or to confirm that there will be no time step at the next possible date. Daniel GAMBIS Director Central Bureau of IERS

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