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end of DST in occupied France October 1944
by Alois Treindl Sept. 7, 2019

Sept. 7, 2019

This is just a question to some well informed readers of this mailing list. Liberated France ended daylight saving time on 8 October 1944, 01:00, as represented in zone Europe/Paris. Eastern parts of France were still occupied by the German army at that time, and Germany ended DST in 1944 on 2 October 1922, 02:00s = 03:00, as represented in TZ by Europe/Berlin, rule C-Eur. For occupied France however, Shanks claims the end of DST on 3 Oct 1944 03:00. For all other countries in Europe on German time at that moment, Shanks holds that DST ended 2 October, like in Germany itself. I cannot find a source supporting Shanks' claim for the deviation in France. Does anyone have information supporting Shanks' claim?

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Typo fixes
by Tim Parenti Sept. 2, 2019

Sept. 2, 2019

Attached are a couple small typo fixes to recent commentary. -- Tim Parenti

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[PATCH] * southamerica: Modernize Magallanes comments.
by Paul Eggert Sept. 1, 2019

Sept. 1, 2019

--- southamerica | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/southamerica b/southamerica index 397a2cc..9b679c6 100644 --- a/southamerica +++ b/southamerica @@ -1230,14 +1230,8 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # From Juan Correa (2016-12-04): # Magallanes region ... will keep DST (UTC -3) all year round.... # http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-e… -# # From Deborah Goldsmith (2017-01-19): # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/… -# From Paul Eggert (2017-01-19): -# The above says the Magallanes change expires 2019-05-11 at 24:00, -# so in theory, they will revert to -04/-03 after that, which means -# they will switch from -03 to -04 one hour after Santiago does that day. -# For now, assume that they will not revert. # From Juan Correa (2018-08-13): # As of moments ago, the Ministry of Energy in Chile has announced the new @@ -1258,6 +1252,11 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. # From Juan Correa (2019-02-04): # http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/… +# From Paul Eggert (2019-09-01): +# The above says the Magallanes exception expires 2022-04-02 at 24:00, +# so in theory, they will revert to -04/-03 after that. +# For now, assume that they will not revert, +# since they have extended the expiration date once already. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 - -- 2.21.0

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Re: [tz] Turkey Rules 1978 - 1983 may need revision
by Paul Eggert Aug. 29, 2019

Aug. 29, 2019

Michael H Deckers wrote: > There may be some typos in the proposed change: Thanks for checking it so carefully. Alois Treindl also noted the 1940 typo. I installed the attached.

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proposed time zone package changes (Samoa, Factory, et al.)
by Arthur David Olson Aug. 28, 2019

Aug. 28, 2019

Below find proposed time zone package changes; the executive summary: * Makefile Change LOCALTIME default from "Factory" to "GMT"; do not compile "factory" file (but keep it in the distribution). * Theory Remove reference to "Factory" zone. * australasia Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to 2011-04-03 1:00 (thanks to Raymond Hughes for a reference). * localtime.c Initialize ttinfo structures filled by tzparse (thanks to Ravindra for reporting a valgrind warning). * zic.c Fix generation of POSIX strings for zones with rules using "weekday<=n" forms of dates (thanks to Lei Liu for finding the problem). Also, limit output for non-POSIX-specificable zones defined to follow the same rules every year. (Note that no zones of either of the above types appear in the distribution; these changes cater to add-on zones). If no problems are found, 2010n will appear on 2010-10-25. --ado diff -r -c old/Makefile new/Makefile *** old/Makefile Mon Sep 27 09:24:25 2010 --- new/Makefile Tue Oct 12 12:36:50 2010 *************** *** 1,5 **** # <pre> ! # @(#)Makefile 8.8 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)Makefile 8.9 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 12,18 **** # make zonenames # to get a list of the values you can use for LOCALTIME. ! LOCALTIME= Factory # If you want something other than Eastern United States time as a template # for handling POSIX-style time zone environment variables, --- 12,18 ---- # make zonenames # to get a list of the values you can use for LOCALTIME. ! LOCALTIME= GMT # If you want something other than Eastern United States time as a template # for handling POSIX-style time zone environment variables, *************** *** 262,269 **** DOCS= README Theory $(MANS) date.1 Makefile PRIMARY_YDATA= africa antarctica asia australasia \ europe northamerica southamerica ! YDATA= $(PRIMARY_YDATA) pacificnew etcetera factory backward ! NDATA= systemv SDATA= solar87 solar88 solar89 TDATA= $(YDATA) $(NDATA) $(SDATA) TABDATA= iso3166.tab zone.tab --- 262,269 ---- DOCS= README Theory $(MANS) date.1 Makefile PRIMARY_YDATA= africa antarctica asia australasia \ europe northamerica southamerica ! YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward ! NDATA= systemv factory SDATA= solar87 solar88 solar89 TDATA= $(YDATA) $(NDATA) $(SDATA) TABDATA= iso3166.tab zone.tab diff -r -c old/Theory new/Theory *** old/Theory Mon Sep 27 09:24:25 2010 --- new/Theory Tue Oct 12 12:36:50 2010 *************** *** 1,4 **** ! @(#)Theory 8.4 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. --- 1,4 ---- ! @(#)Theory 8.5 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. *************** *** 287,294 **** See the file `backward' for most of these older names (e.g. `US/Eastern' instead of `America/New_York'). The other old-fashioned names still supported are ! `WET', `CET', `MET', `EET' (see the file `europe'), ! and `Factory' (see the file `factory'). ----- Time zone abbreviations ----- --- 287,293 ---- See the file `backward' for most of these older names (e.g. `US/Eastern' instead of `America/New_York'). The other old-fashioned names still supported are ! `WET', `CET', `MET', and `EET' (see the file `europe'). ----- Time zone abbreviations ----- diff -r -c old/australasia new/australasia *** old/australasia Mon Sep 27 09:24:27 2010 --- new/australasia Tue Oct 12 13:14:56 2010 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.18 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.19 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 487,497 **** # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 ! -11:00 1:00 WSDT 2011 Apr 3 -11:00 - WST # Solomon Is --- 487,507 ---- # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> + # From Raymond Hughes (2010-10-07): + # Please see + # <a href="http://www.mcil.gov.ws"> + # http://www.mcil.gov.ws + # </a>, + # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday + # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight + # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks + # backwards from 1:00am to 12:00am" + Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 ! -11:00 1:00 WSDT 2011 Apr 3 1:00 -11:00 - WST # Solomon Is diff -r -c old/localtime.c new/localtime.c *** old/localtime.c Mon Sep 27 09:24:26 2010 --- new/localtime.c Tue Oct 12 12:36:51 2010 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.14"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.15"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 914,919 **** --- 914,920 ---- register unsigned char * typep; register char * cp; register int load_result; + static struct ttinfo zttinfo; INITIALIZE(dstname); stdname = name; *************** *** 986,991 **** --- 987,993 ---- /* ** Two transitions per year, from EPOCH_YEAR forward. */ + sp->ttis[0] = sp->ttis[1] = zttinfo; sp->ttis[0].tt_gmtoff = -dstoffset; sp->ttis[0].tt_isdst = 1; sp->ttis[0].tt_abbrind = stdlen + 1; *************** *** 1099,1106 **** } /* ** Finally, fill in ttis. - ** ttisstd and ttisgmt need not be handled. */ sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = FALSE; sp->ttis[0].tt_abbrind = 0; --- 1101,1108 ---- } /* ** Finally, fill in ttis. */ + sp->ttis[0] = sp->ttis[1] = zttinfo; sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = FALSE; sp->ttis[0].tt_abbrind = 0; *************** *** 1113,1118 **** --- 1115,1121 ---- dstlen = 0; sp->typecnt = 1; /* only standard time */ sp->timecnt = 0; + sp->ttis[0] = zttinfo; sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = 0; sp->ttis[0].tt_abbrind = 0; diff -r -c old/zic.c new/zic.c *** old/zic.c Mon Sep 27 09:24:26 2010 --- new/zic.c Tue Oct 12 13:37:29 2010 *************** *** 3,9 **** ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.22"; #include "private.h" #include "locale.h" --- 3,9 ---- ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.24"; #include "private.h" #include "locale.h" *************** *** 1881,1896 **** register int week; if (rp->r_dycode == DC_DOWGEQ) { ! week = 1 + rp->r_dayofmonth / DAYSPERWEEK; ! if ((week - 1) * DAYSPERWEEK + 1 != rp->r_dayofmonth) return -1; } else if (rp->r_dycode == DC_DOWLEQ) { if (rp->r_dayofmonth == len_months[1][rp->r_month]) week = 5; else { ! week = 1 + rp->r_dayofmonth / DAYSPERWEEK; ! if (week * DAYSPERWEEK - 1 != rp->r_dayofmonth) return -1; } } else return -1; /* "cannot happen" */ (void) sprintf(result, "M%d.%d.%d", --- 1881,1896 ---- register int week; if (rp->r_dycode == DC_DOWGEQ) { ! if ((rp->r_dayofmonth % DAYSPERWEEK) != 1) return -1; + week = 1 + rp->r_dayofmonth / DAYSPERWEEK; } else if (rp->r_dycode == DC_DOWLEQ) { if (rp->r_dayofmonth == len_months[1][rp->r_month]) week = 5; else { ! if ((rp->r_dayofmonth % DAYSPERWEEK) != 0) return -1; + week = rp->r_dayofmonth / DAYSPERWEEK; } } else return -1; /* "cannot happen" */ (void) sprintf(result, "M%d.%d.%d", *************** *** 2018,2023 **** --- 2018,2024 ---- register char * envvar; register int max_abbr_len; register int max_envvar_len; + register int prodstic; /* all rules are min to max */ max_abbr_len = 2 + max_format_len + max_abbrvar_len; max_envvar_len = 2 * max_abbr_len + 5 * 9; *************** *** 2032,2037 **** --- 2033,2039 ---- timecnt = 0; typecnt = 0; charcnt = 0; + prodstic = zonecount == 1; /* ** Thanks to Earl Chew ** for noting the need to unconditionally initialize startttisstd. *************** *** 2053,2058 **** --- 2055,2062 ---- updateminmax(rp->r_loyear); if (rp->r_hiwasnum) updateminmax(rp->r_hiyear); + if (rp->r_lowasnum || rp->r_hiwasnum) + prodstic = FALSE; } } /* *************** *** 2075,2080 **** --- 2079,2094 ---- if (max_year <= INT_MAX - YEARSPERREPEAT) max_year += YEARSPERREPEAT; else max_year = INT_MAX; + /* + ** Regardless of any of the above, + ** for a "proDSTic" zone which specifies that its rules + ** always have and always will be in effect, + ** we only need one cycle to define the zone. + */ + if (prodstic) { + min_year = 1900; + max_year = min_year + YEARSPERREPEAT; + } } /* ** For the benefit of older systems,

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Re: [tz] question regarding Europe/Brussels in 1914
by Stijn “Adhemar” Vandamme Aug. 28, 2019

Aug. 28, 2019

A reliable source for the history of the timezone offset in Brussels is the Royal Observatory of Belgium. Dutch: <https://www.astro.oma.be/GENERAL/INFO/nli001a.html> French: <https://www.astro.oma.be/GENERAL/INFO/fri001a.html> The text at the beginning translates: > *The time in Belgium* > > Until 1 May 1892 the local (mean) time was used, usually the one of a > large town nearby. > > The law of 28 April 1892 (in effect from 1 May 1892) determined the legal > time in Belgium to be GMT, later UT, now standardized to coordinated > universal time (UTC). The table indicates which correction is required > for the period following the indicated date. The text before the bottom table translates: > In the period 1914-1918 the following arrangement was in force *in > occupied territory*. In the other areas only UTC was used (correction > +0h). The exact moment of the hour change depended on the advance or > withdrawal of the occupation army. The bottom table mentions 8 November 1914 as the start of the imposed use of the +1h offset in occupied territory (including Brussels), without specifying the exact time of that start. The start of summer time in 1916 is mentioned as 30 April 1916 23h UTC which is 1 May 1916 0h (UTC+1) becoming 1h (UTC+2) local time. — Adhemar

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Europe/Brussels on 1892-05-01
by Michael H Deckers Aug. 28, 2019

Aug. 28, 2019

The exposition in the web page [https://www.bestor.be/wiki/index.php/Voyager_dans_le_temps._L%E2%80%99intro…] gives several contemporary sources from which one can conclude that the switch in Europe/Brussels on 1892-05-01 was from 00:17:30 to 00:00:00, and not from 12:00:00 to 11:42:30 as is currently contained in tzdb. It is true that mean time at the Royal Observatory was determined to be UT + 17 min + 29 s at the time, and that the observatory delivered Brussels time every morning at 06:00, but this does not mean that Brussels time was UT + 17 min + 29 s because the observatory had recently moved to Uccle (see [Ernest Pasquier: "L’unification des heures", page 306] as referenced in the web page above). The text in tzdb LMT before 1892 was 0:17:30, according to the official journal of Belgium: Moniteur Belge, Samedi 30 Avril 1892, N.121. is probably incorrect as regards the "according to". The text of the 1892 law is reprinted in [Laurent Delatte: "C'était dans Ciel et Terre il y a cent ans". Ciel et Terre vol 108 p 113..116. 1992.], online at [http://articles.adsabs.harvard.edu/cgi-bin/article_queryform?bibcode=1992C%…] on page 115, and it does not contain any offsets from UT. And it hardly could contain offsets because every larger town in Belgium had its own railway time, and civil time outside the stations often differed, as described by the articles by Ernest Pasquier referenced in the web page. Anyway, the actual time step taken was 17 min + 30 s, and time jumped from 00:17:30 to 00:00:00. This is described in the circular issued by the administration of railways and quoted in [Gazette de Charleroi of 1892-04-30, "Réglez vos pendules" page 1..2], and linked to in the BEstor web page. Michael Deckers.

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Norfolk Island, Daylight Saving Time (DST) 6/10/19-05/04/20 [SEC=UNCLASSIFIED]
by Kyle Czech Aug. 28, 2019

Aug. 28, 2019

Please be advised that there will be a time zone change for Norfolk Island as of October 6, 2019. The Ordinance for the time zone change was passed in December last year https://www.legislation.gov.au/Details/F2018L01702 and will come into effect October 6, 2019. Please note the below in regards to change of time observed: daylight saving period means: (a) a period starting at 2 am on the first Sunday in October in each year and ending at 2 am on the first Sunday in the following April; or (b) if the Minister declares a different period under section 4A of this Ordinance-that period. daylight saving time means the time prescribed by section 7 of this Ordinance. standard time means the time prescribed by section 6 of this Ordinance. Further information is available here: https://www.australia.gov.au/about-australia/facts-and-figures/time-zones-a… If you have any questions please let me know. Thank you, Kyle Kyle Czech [http://portals/entr/business-services/communications-and-media/publishing-a…, Local Government and Assets Norfolk Island and Mainland Territories Branch, Territories Division Department of Infrastructure, Transport, Cities and Regional Development t 0011 6723 23315 w www.infrastructure.gov.au<http://www.infrastructure.gov.au/> --------------------------------------------------------------------- Disclaimer This message has been issued by the Department of Infrastructure, Regional Development and Cities. The information transmitted is for the use of the intended recipient only and may contain confidential and/or legally privileged material. Any review, re-transmission, disclosure, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited and may result in severe penalties. If you have received this e-mail in error, please notify the Department on (02) 6274-7111 and delete all copies of this transmission together with any attachments. ---------------------------------------------------------------------

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Re: [tz] tz Digest, Vol 95, Issue 8
by Kıvanç Yazan Aug. 28, 2019

Aug. 28, 2019

Hi! Here's some "resmi gazete" links for those years. http://www.resmigazete.gov.tr/arsiv/14539.pdf (page 24) 1973-06-03 01:00 -> 02:00 1973-11-04 02:00 -> 01:00 http://www.resmigazete.gov.tr/arsiv/14829.pdf (page 1) 1974-03-31 02:00 -> 03:00 1974-11-03 02:00 -> 01:00 http://www.resmigazete.gov.tr/arsiv/15161.pdf (page 1) 1975-03-22 02:00 -> 03:00 1975-11-02 02:00 -> 01:00 http://www.resmigazete.gov.tr/arsiv/15535_1.pdf (page 1) 1976-03-21 02:00 -> 03:00 1976-10-31 02:00 -> 01:00 http://www.resmigazete.gov.tr/arsiv/15778.pdf (page 5) 1977-04-03 02:00 -> 03:00 1977-10-16 02:00 -> 01:00 1978-04-02 02:00 -> 03:00 (not applied, see below) 1978-10-15 02:00 -> 01:00 (not applied, see below) 1979-04-01 02:00 -> 03:00 (not applied, see below) 1979-10-14 02:00 -> 01:00 (not applied, see below) http://www.resmigazete.gov.tr/arsiv/16245.pdf (page 17) This cancels the previous decision, and repeats it only for 1978. 1978-04-02 02:00 -> 03:00 1978-10-15 02:00 -> 01:00 (not applied due to standard TZ change below) http://www.resmigazete.gov.tr/arsiv/16331.pdf (page 3) This decision changes the default longitude for Turkish time zone from 30 degrees East to 45 degrees East. This means a standard TZ change, from +2 to +3. This is published & applied on 1978-06-29. At that time, Turkey was already on summer time (already on 45E). Hence, this new law just meant an "continuous summer time". Note that this was reversed in a few years. http://www.resmigazete.gov.tr/arsiv/18119_1.pdf (page 1) 1983-07-31 02:00 -> 03:00 (note that this jumps TZ to +4) 1983-10-02 02:00 -> 01:00 (back to +3) http://www.resmigazete.gov.tr/arsiv/18561.pdf (page 1 and 34) At this time, Turkey is still on +3 with no spring-forward on early 1984. This decision is published on 10/31/1984. Page 1 declares the decision of reverting the "default longitude change". So the standard time should go back to +3 (30E). And page 34 explains when that will happen: 1984-11-01 02:00 -> 01:00 You can think of this as "end of continuous summer time, change of standard time zone". http://www.resmigazete.gov.tr/arsiv/18713.pdf (page 1) 1985-04-20 01:00 -> 02:00 1985-09-28 02:00 -> 01:00 >From 1986 on, you can see my previous comments here: https://github.com/eggert/tz/blob/master/europe#L3671 Thanks, Kivanc Yazan

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TZData file error
by Leonardo Menezes Aug. 26, 2019

Aug. 26, 2019

Hello, I am trying to update the time but is being displayed an error in the file (attachment). The file used was tzdata2019b Could you help me please? Thank you, *Leonardo Menezes* (13) 98211-5615

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