April 2000 - tz - lists.iana.org

proposed tz patch for Argentine daylight saving last summer
by Paul Eggert April 19, 2000

April 19, 2000

Here's a proposed patch to reflect an error in the current tz data that was reported by Fabian L. Arce Jofre on April 4. Last summer, Argentina observed daylight saving time, but it didn't adjust its clocks because it changed the standard-time UTC offset during the period while it was observing DST. (Isn't politics wonderful?) The current tz data has the correct Argentine wall clock values, but has incorrect values for the the tm_isdst flag and for the time zone name for the period 1999-10-03 to 2000-03-05. =================================================================== RCS file: RCS/southamerica,v retrieving revision 2000.3 retrieving revision 2000.3.0.1 diff -pu -r2000.3 -r2000.3.0.1 --- southamerica 2000/03/04 15:31:08 2000.3 +++ southamerica 2000/04/19 05:36:52 2000.3.0.1 @@ -111,24 +111,31 @@ Rule Arg 1989 1992 - Oct Sun>=15 0:00 1: # From Rives McDow (2000-01-10): # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, # which did not result in the switch of a time zone, as they stayed 9 hours -# from the International Date Line. On March 5, 2000, at 0:00 local time, -# Argentina will come off daylight savings time, which will bring them to 8 -# hours from the International Date Line. +# from the International Date Line. +Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S +Rule Arg 2000 only - Mar Sun>=1 0:00 0 - # # From Peter Gradelski via Steffen Thorsen (2000-03-01): # We just checked with our San Paulo office and they say the government of # Argentina decided not to become one of the countries that go on or off DST. # So Buenos Aires should be -3 hours from GMT at all times. # +# From Fabian L. Arce Jofre <farcejofre(a)bigfoot.com> (2000-04-04): +# The law that claimed DST for Argentina was derogated by President Fernando +# de la Rua on March 2, 2000, because it would make people spend more energy +# in the winter time, rather than less. The change took effect on March 3. +# # Zone NAME GMTOFF RULES FORMAT [UNTIL] # -# Buenos Aires (BA), Distrito Federal (DF), Santa Cruz (SC), -# Tierra del Fuego (TF) & Antartida e Islas +# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC), +# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov -4:16:44 - CMT 1920 May # Cordoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 - -3:00 Arg AR%sT + -3:00 Arg AR%sT 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 + -3:00 - ART # # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), # Formosa (FM), La Pampa (LP), Chubut (CH) @@ -137,6 +144,8 @@ Zone America/Rosario -4:02:40 - LMT 1894 -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1991 Jul + -3:00 - ART 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 -3:00 - ART # # Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), @@ -146,6 +155,8 @@ Zone America/Cordoba -4:16:44 - LMT 1894 -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1990 Jul + -3:00 - ART 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 -3:00 - ART # # Jujuy (JY) @@ -157,6 +168,8 @@ Zone America/Jujuy -4:21:12 - LMT 1894 N -4:00 - WART 1991 Oct 6 -4:00 1:00 WARST 1992 Mar 15 -4:00 - WART 1992 Oct 18 + -3:00 - ART 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 -3:00 - ART # # Catamarca (CT) @@ -167,6 +180,8 @@ Zone America/Catamarca -4:23:08 - LMT 18 -3:00 Arg AR%sT 1990 Jul -3:00 - ART 1991 Jul -3:00 Arg AR%sT 1992 Jul + -3:00 - ART 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 -3:00 - ART # # Mendoza (MZ) @@ -178,6 +193,8 @@ Zone America/Mendoza -4:35:16 - LMT 1894 -4:00 - WART 1991 Oct 15 -4:00 1:00 WARST 1992 Mar 1 -4:00 - WART 1992 Oct 18 + -3:00 - ART 1999 Oct 3 0:00 + -4:00 Arg AR%sT 2000 Mar 3 0:00 -3:00 - ART # Aruba

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support for C99 strftime %F and %z formats, plus Solaris 8 fix
by Paul Eggert April 13, 2000

April 13, 2000

The new C Standard specifies two new formats for strftime: %F and %z. Here's a proposed patch to add support for this. I ran into a Solaris 8 porting problem when debugging this, and enclose a patch for this as well. =================================================================== RCS file: RCS/Makefile,v retrieving revision 2000.1 retrieving revision 2000.1.0.1 diff -pu -r2000.1 -r2000.1.0.1 --- Makefile 2000/01/18 14:21:10 2000.1 +++ Makefile 2000/04/13 19:11:13 2000.1.0.1 @@ -88,6 +88,8 @@ LDLIBS= # Add the following to the end of the "CFLAGS=" line as needed. # -DHAVE_ADJTIME=0 if `adjtime' does not exist (SVR0?) # -DHAVE_GETTEXT=1 if `gettext' works (GNU, Linux, Solaris); also see LDLIBS +# -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares +# ctime_r and asctime_r incompatibly with the POSIX standard. # -DHAVE_LONG_DOUBLE=1 if your compiler supports the `long double' type # -DHAVE_SETTIMEOFDAY=0 if settimeofday does not exist (SVR0?) # -DHAVE_SETTIMEOFDAY=1 if settimeofday has just 1 arg (SVR4) =================================================================== RCS file: RCS/private.h,v retrieving revision 1999.5 retrieving revision 1999.5.0.1 diff -pu -r1999.5 -r1999.5.0.1 --- private.h 1999/08/17 18:09:09 1999.5 +++ private.h 2000/04/13 19:11:13 1999.5.0.1 @@ -38,6 +38,10 @@ static char privatehid[] = "@(#)private. #define HAVE_GETTEXT 0 #endif /* !defined HAVE_GETTEXT */ +#ifndef HAVE_INCOMPATIBLE_CTIME_R +#define HAVE_INCOMPATIBLE_CTIME_R 1 +#endif /* !defined INCOMPATIBLE_CTIME_R */ + #ifndef HAVE_SETTIMEOFDAY #define HAVE_SETTIMEOFDAY 3 #endif /* !defined HAVE_SETTIMEOFDAY */ @@ -66,6 +70,11 @@ static char privatehid[] = "@(#)private. #define LOCALE_HOME "/usr/lib/locale" #endif /* !defined LOCALE_HOME */ +#if HAVE_INCOMPATIBLE_CTIME_R +#define asctime_r _incompatible_asctime_r +#define ctime_r _incompatible_ctime_r +#endif /* HAVE_INCOMPATIBLE_CTIME_R */ + /* ** Nested includes */ @@ -203,6 +212,28 @@ void icfree P((char * pointer)); void ifree P((char * pointer)); char * scheck P((const char *string, const char *format)); +/* +** External declarations, possibly renamed to private identifiers. +*/ +#ifndef USG_COMPAT +#define timezone _timezone +#define daylight _daylight +#endif +#ifndef ALTZONE +#define altzone _altzone +#endif +/* strftime needs these variables if TM_GMTOFF is not defined. */ +#ifndef TM_GMTOFF +#define USG_COMPAT +#define ALTZONE +#endif +#ifdef USG_COMPAT +extern time_t timezone; +extern int daylight; +#endif +#ifdef ALTZONE +extern time_t altzone; +#endif /* ** Finally, some convenience items. @@ -277,6 +308,13 @@ char * scheck P((const char *string, con #define TZ_DOMAIN "tz" #endif /* !defined TZ_DOMAIN */ +#if HAVE_INCOMPATIBLE_CTIME_R +#undef asctime_r +#undef ctime_r +char *asctime_r P((struct tm const *, char *)); +char *ctime_r P((time_t const *, char *)); +#endif /* HAVE_INCOMPATIBLE_CTIME_R */ + /* ** UNIX was a registered trademark of UNIX System Laboratories in 1993. */ =================================================================== RCS file: RCS/strftime.c,v retrieving revision 1999.9 retrieving revision 1999.9.0.1 diff -pu -r1999.9 -r1999.9.0.1 --- strftime.c 1999/11/08 19:54:36 1999.9 +++ strftime.c 2000/04/13 19:11:13 1999.9.0.1 @@ -247,6 +247,9 @@ label: case 'e': pt = _conv(t->tm_mday, "%2d", pt, ptlim); continue; + case 'F': + pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp); + continue; case 'H': pt = _conv(t->tm_hour, "%02d", pt, ptlim); continue; @@ -489,10 +492,46 @@ label: pt = _add(t->TM_ZONE, pt, ptlim); else #endif /* defined TM_ZONE */ - if (t->tm_isdst == 0 || t->tm_isdst == 1) { - pt = _add(tzname[t->tm_isdst], + if (0 <= t->tm_isdst) + pt = _add(tzname[t->tm_isdst != 0], pt, ptlim); - } else pt = _add("?", pt, ptlim); + continue; + case 'z': + { + int diff; + char const *sign; + if (t->tm_isdst < 0) + continue; +#ifdef TM_GMTOFF + diff = t->TM_GMTOFF; +#else /* !defined TM_GMTOFF */ + /* + ** C99 says that the UTC offset must + ** be computed by looking only at + ** tm_isdst. This requirement is + ** incorrect, since it means the code + ** must rely on magic (in this case + ** altzone and timezone), and the + ** magic might not have the correct + ** offset. Doing things correctly is + ** tricky and requires disobeying C99; + ** see GNU C strftime for details. + ** For now, punt and conform to the + ** standard, even though it's incorrect. + ** + */ + diff = - (t->tm_isdst ? altzone : timezone); +#endif /* !defined TM_GMTOFF */ + if (diff < 0) { + sign = "-"; + diff = -diff; + } else + sign = "+"; + pt = _add(sign, pt, ptlim); + diff /= 60; + pt = _conv((diff/60)*100 + diff%60, + "%04d", pt, ptlim); + } continue; case '+': pt = _fmt(Locale->date_fmt, t, pt, ptlim,

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FW: [Fwd: Day light savings time]
by Olson, Arthur David (NCI) April 12, 2000

April 12, 2000

Neither higgoman(a)eisa.net.au nor webmaster(a)holidayfestival.com are on the time zone mailing list; direct any replies appropriately. --ado > -----Original Message----- > From: Brian Prescott-Decie [SMTP:bdecie@holidayfestival.com] > Sent: Tuesday, April 11, 2000 1:32 AM > To: tz(a)elsie.nci.nih.gov > Subject: [Fwd: Day light savings time] > > > > -------- Original Message -------- > Subject: Day light savings time > Date: Tue, 11 Apr 2000 15:23:23 +1000 > From: "Eisa" <higgoman(a)eisa.net.au> > To: <webmaster(a)HolidayFestival.com> > > This year day light savings will start earlier in Sydney because of the > olympics not sure of the exact date will let you know.

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Request for Addition to the Mailing List
by Wong, Ren April 12, 2000

April 12, 2000

Would you please add me to your mailing list? Thanks. My company is currently installing Mobile Pre-Paid Service in Asia, Africa, Indian Ocean, and Europe on Pentium based UnixWare 2.1.3 UnixWare 7.1.0 systems. Your information has been invaluable to us. My responsibility is to ensure the correct setup of the timezone on our systems. Without the information you provided, we would not be able to calculate call duration for the pre-paid mobile subscribers. Ren Wong Software Development IN Division Comverse Network Systems 1025 Briggs Rd., Suite 100 Mt. Laurel, NJ 08054 Voice (856) 608-2859 Fax (856) 866-8850

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[Fwd: Day light savings time]
by Brian Prescott-Decie April 11, 2000

April 11, 2000

-------- Original Message -------- Subject: Day light savings time Date: Tue, 11 Apr 2000 15:23:23 +1000 From: "Eisa" <higgoman(a)eisa.net.au> To: <webmaster(a)HolidayFestival.com> This year day light savings will start earlier in Sydney because of the olympics not sure of the exact date will let you know.

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FW: DST law derogation in Argentina
by Olson, Arthur David (NCI) April 4, 2000

April 4, 2000

Fabián is not on the time zone mailing list; be sure to direct any replies appropriately. --ado -----Original Message----- From: Fabián L. Arce Jofré [SMTP:fabian@limite.yi.org] Sent: Monday, April 03, 2000 11:54 PM To: tz(a)elsie.nci.nih.gov Subject: DST law derogation in Argentina Hello, my name is Fabián L. Arce Jofré, and I'm from Argentina, and this e-mail message is for tell you about the time zone change in Argentina recently -- the law that established DST was derogated recently due to an evaluation of the government about more waste of energy than before. I cut the Argentina part in the southamerica file and send it separately, I think it's the best way. I corrected the time zone data and the name of a district, Distrito Federal (DF) for Capital Federal (CF), the correct name in Argentina. If you have questions or comments, don't hesitate to mail me at farcejofre(a)bigfoot.com. Sincerely, Fabián L. Arce Jofré Buenos Aires, Argentina farcejofre(a)bigfoot.com <<argentina-20000404>>

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DST law derogation in Argentina
by Fabián L. Arce Jofré April 4, 2000

April 4, 2000

Hello, my name is Fabián L. Arce Jofré, and I'm from Argentina, and this e-mail message is for tell you about the time zone change in Argentina recently -- the law that established DST was derogated recently due to an evaluation of the government about more waste of energy than before. I cut the Argentina part in the southamerica file and send it separately, I think it's the best way. I corrected the time zone data and the name of a district, Distrito Federal (DF) for Capital Federal (CF), the correct name in Argentina. If you have questions or comments, don't hesitate to mail me at farcejofre(a)bigfoot.com. Sincerely, Fabián L. Arce Jofré Buenos Aires, Argentina farcejofre(a)bigfoot.com

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LA Times: Daylight Saving Ticks Off Millions in Mexico
by Paul Eggert April 2, 2000

April 2, 2000

On page A4 of today's Los Angeles Times, staff writer Mary Beth Sheridan writes: COLIMA, Mexico--Soledad Castillo has a list of grave problems she wants Mexico's next president to solve. Low salaries. Rising crime. Poverty. But a different issue was troubling the 41-year-old cleaning woman one recent morning as she attended a campaign rally in this city in southwestern Mexico. It was something more urgent, more sinister--an evil that has aroused Mexicans nationwide in an extraordinary political backlash. Daylight saving time. Sheridan goes on to write that the issue has managed to push issues like the presidential race, poverty, and crime off the front pages. Half a dozen Mexican states have organized plebiscites on whether to implement DST, and the ruling party presidential candidate has promised to limit DST to 4 months instead of 6. Here's the URL of the complete story: http://www.latimes.com/news/nation/20000402/t000030885.html

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daylights savings time
by SEETA57＠aol.com April 1, 2000

April 1, 2000

when do we set our clocks forward 1 hour

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