June 2009 - tz - lists.iana.org

proposed tz change for Latvia, Lithuania
by Paul Eggert 25 May '15

25 May '15

It's March Madness time for daylight-saving rule changes. Here's a proposed change to the tz database to keep up with the latest political development, which affects time stamps starting March 29: * Latvia and Lithuania will not observe DST, starting this year. Thanks to Andrei Ivanov for this info. =================================================================== RCS file: RCS/europe,v retrieving revision 2000.3 retrieving revision 2000.3.0.1 diff -pu -r2000.3 -r2000.3.0.1 --- europe 2000/03/04 15:31:08 2000.3 +++ europe 2000/03/08 17:48:59 2000.3.0.1 @@ -1135,6 +1135,12 @@ Link Europe/Rome Europe/San_Marino # 1997-01-21 on transition to Summer time ... established the same order of # daylight savings time settings as in the States of the European Union. +# From Andrei Ivanov (2000-03-06): +# This year Latvia will not switch to Daylight Savings Time (as specified in +# <a href="http://www.lv-laiks.lv/wwwraksti/2000/071072/vd4.htm"> +# The Regulations of the Cabinet of Ministers of the Rep. of Latvia of +# 29-Feb-2000 (#79)</a>, in Latvian for subscribers only). + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 - @@ -1151,7 +1157,8 @@ Zone Europe/Riga 1:36:24 - LMT 1880 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s 2:00 1:00 EEST 1989 Sep lastSun 2:00s 2:00 Latvia EE%sT 1997 Jan 21 - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb 29 + 2:00 - EET # Liechtenstein # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1178,6 +1185,11 @@ Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun # motion to give up shifting to summer time in spring, as it was # already done by Estonia. +# From Andrei Ivanov (2000-03-06): +# I've heard that Ministers of three Baltic countries on their summit +# somewhere in February decided not to switch to summer time starting from +# this spring. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Vilnius 1:41:16 - LMT 1880 1:24:00 - WMT 1917 # Warsaw Mean Time @@ -1192,7 +1204,8 @@ Zone Europe/Vilnius 1:41:16 - LMT 1880 2:00 C-Eur EE%sT 1998 2:00 - EET 1998 Mar 29 1:00u 1:00 EU CE%sT 1999 Oct 31 1:00u - 2:00 EU EE%sT + 2:00 EU EE%sT 2000 Feb + 2:00 - EET # Luxembourg # Whitman disagrees with most of these dates in minor ways; go with Shanks.

5 5

corrected DST data Switzerland 1941 and 1942, final report
by Alois Treindl 25 Aug '11

25 Aug '11

Hello I have researched the DST usage in Switzerland during the 1940ies. As I wrote in an earlier message, I suspected the current tzdata values to be wrong. This is now verified. I have found copies of the original ruling by the Swiss Federal government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss federal law collection) and attach GIF copies of the two pages for 1941. DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am. DST began on Monday, 4 May 1942 at 01:00 am DST ended on Monday, 5 Oct 1942 at 02:00 am There was no DST in 1940, I have checked the law collection carefully. It is also indicated by the fact that the 1942 entry in the law collection points back to 1941 as a reference, but no reference to any other years are made. Newspaper articles I have read in the archives on 6 May 1941 reported about the introduction of DST (Sommerzeit in German) during the previous night as an absolute novelty, because this was the first time that such a thing had happened in Switzerland. I have also checked 1916, because one book source (Gabriel, Traite de l'heure dans le monde) claims that Switzerland had DST in 1916. This is false, no official document could be found. Probably Gabriel got misled by references to Germany, which introduced DST in 1916 for the first time. The tzdata rules for Switzerland must be changed to: Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - The 1940 rules must be deleted. One further detail for Switzerland, which is probably out of scope for most users of tzdata: The zone file Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12 0:29:44 - BMT 1894 Jun #Bern Mean Time 1:00 Swiss CE%sT 1981 1:00 EU CE%sT describes all of Switzerland correctly, with the exception of the Cantone Geneve (Geneva, Genf). Between 1848 and 1894 Geneve did not follow Bern Mean Time but kept its own local mean time. To represent this, an extra zone would be needed. Two GIF files are attached. best regards Alois -- || Alois Treindl, Astrodienst AG, mailto:alois@astro.com || Zollikon/Zurich, Switzerland || Free astrological charts at http://www.astro.com/ || SWISS EPHEMERIS Free Edition at http://www.astro.com/swisseph/

2 3

Tomsk wrong timezone
by Jesper Norgaard Welen 18 Feb '11

18 Feb '11

A quote from the 'europe' file: # Novosibirskaya oblast'. Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time 7:00 Russia NOV%sT 1991 Mar 31 2:00s 6:00 Russia NOV%sT 1992 Jan 19 2:00s 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P. 6:00 Russia NOV%sT # # From Oscar van Vlijmen (2001-08-25): [This region consists of] # Kemerovskaya oblast', Krasnoyarskij kraj, # Tajmyrskij (Dolgano-Nenetskij) avtonomnyj okrug, Tomskaya oblast', # Respublika Tuva, Respublika Khakasiya, Evenkijskij avtonomnyj okrug. Zone Asia/Krasnoyarsk 6:11:20 - LMT 1920 Jan 6 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time 7:00 Russia KRA%sT 1991 Mar 31 2:00s 6:00 Russia KRA%sT 1992 Jan 19 2:00s 7:00 Russia KRA%sT In fact, it seems that Tomsk city and Tomskaya oblast' is part of the Novosibirsk timezone, see http://en.wikipedia.org/wiki/Tomskaya_Oblast%27%2C_Russia and http://www.admin.tomsk.ru/1024 ... the latter, if you don't understand russian, look at the time under the green horse. I don't know if this simply means that Tomskaya oblast' changed timezone since 2001, which is a possibility, that would then require a new timezone. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

3 2

GIS Atlas
by John Paulson 25 Jun '09

25 Jun '09

Here is the link www.sedo.com/sale/?d=gisatlas.com Kind Regards John Paulson ----------------------------------------------------------------------------------------------------------- This electronic transmission is strictly confidential and intended solely for the addressee. If you are not the intended addressee, or have otherwise received this transmission in error, you must not disclose, copy or take any action in reliance of this transmission. If you have received this transmission in error, please notify the sender as soon as possible. ======================================================

1 0

(PHP) CEST does not exist in December
by S�bastien WILLEMIJNS 24 Jun '09

24 Jun '09

Hello, If anyone has the code to detect than "25 December $year XX:XX:XX CEST" does not exist I has (quicky and maybe badly) think i will compare time between GMT and an hour http://www.php.net/manual/fr/function.timezone-offset-get.php to grab offset (+1 or +2 for me in France) but if anyone has the code od a specific date ;)

1 0

tzdata2009j.tar.gz
by Olson, Arthur David (NIH/NCI) [E] 24 Jun '09

24 Jun '09

The file... ftp://elsie.nci.nih.gov/pub/tzdata2009j.tar.gz ...is now available; this reflects the Bangladesh change circulated earlier this week on the time zone mailing list (with a short turnaround since the DST change is impending). We'll get to revisit Bangladesh once the end to DST has been set. --ado

3 3

zic produces wrong POSIX style TZ
by Andreas Schwab 23 Jun '09

23 Jun '09

The current Bangladesh time zone description is unusual in that it ends with being continuously in DST. This uncovered a bug in zic, which infers a POSIX TZ string of BDST-6 from the rule. This is wrong since a time zone that is continuously in DST cannot be expressed by POSIX rules, so zic should not try to generate such a string. Andreas. --- zic.c.~1~ 2009-04-20 22:17:54.000000000 +0200 +++ zic.c 2009-06-22 18:35:10.000000000 +0200 @@ -1921,7 +1921,7 @@ const int zonecount; if (stdrp != NULL && stdrp->r_hiyear == 2037) return; } - if (stdrp == NULL && zp->z_nrules != 0) + if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) return; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; doabbr(result, zp->z_format, abbrvar, FALSE, TRUE); -- Andreas Schwab, aschwab(a)redhat.com GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E "And now for something completely different."

1 0

tzselect patch: remove dependency on ksh
by Peter Seebach 22 Jun '09

22 Jun '09

This was done against the copy in glibc, the eglibc folks suggested I send it on to you as the upstream. Basic synopsis: This allows tzselect to be used on hosts (such as embedded systems) with only a POSIX shell. --- glibc-2.8.orig/timezone/tzselect.ksh 2009-06-22 11:23:11.000000000 -0700 +++ glibc-2.8/timezone/tzselect.sh 2009-06-22 11:52:26.000000000 -0700 @@ -1,27 +1,16 @@ -#! @KSH@ +#! @SH@ -# '@(#)tzselect.ksh 8.1' +# '@(#)tzselect.sh 8.1' # Ask the user about the time zone, and output the resulting TZ value to stdout. # Interact with the user via stderr and stdin. # Contributed by Paul Eggert. -# Porting notes: -# -# This script requires several features of the Korn shell. -# If your host lacks the Korn shell, -# you can use either of the following free programs instead: -# -# <a href=ftp://ftp.gnu.org/pub/gnu/> -# Bourne-Again shell (bash) -# </a> -# -# <a href=ftp://ftp.cs.mun.ca/pub/pdksh/pdksh.tar.gz> -# Public domain ksh -# </a> -# -# This script also uses several features of modern awk programs. +# func_select allows this script to run on shells (such as busybox ash) +# which lack the ksh "select" builtin. + +# This script uses several features of modern awk programs. # If your host lacks awk, or has an old awk that does not conform to Posix.2, # you can use either of the following free programs instead: # @@ -33,6 +22,70 @@ # mawk # </a> +# Implement ksh-style select in POSIX shell + +# We need a mostly-portable echo-n. +case `echo -n "foo\c"` in +*n*c*) func_echo_n() { echo "$*"; } ;; +*n*) func_echo_n() { echo "$*\c"; } ;; +*) func_echo_n() { echo -n "$*"; } ;; +esac + +# Synopsis: Replace "select foo in list" with "while func_select foo in list" +# and this works just like ksh, so far as I know. +func_select () { + func_select_args=0 + if expr "$1" : "^[_a-zA-Z][_a-zA-Z0-9]*$" > /dev/null; then + func_select_var=$1 + else + echo >&2 "func_select: '$1' is not a valid variable name." + return 1 + fi + shift 1 + case $1 in + in) shift 1;; + *) echo >&2 "func_select: usage: func_select var in ... (you must provide +arguments)"; return 1;; + esac + case $# in + 0) echo >&2 "func_select: usage: func_select var in ..."; return 1;; + esac + for func_select_arg + do + func_select_args=`expr $func_select_args + 1` + eval func_select_a_$func_select_args=\$func_select_arg + done + REPLY="" + while : + do + if test -z "$REPLY"; then + func_select_i=1 + while test $func_select_i -le $func_select_args + do + eval echo "\"\$func_select_i) \$func_select_a_$func_select_i\"" + func_select_i=`expr $func_select_i + 1` + done + fi + func_echo_n "${PS3-#? }" >&2 + if read REPLY; then + if test -n "${REPLY}"; then + if expr "$REPLY" : '^[1-9][0-9]*$' > /dev/null; then + if test "$REPLY" -ge 1 && test "$REPLY" -le $func_select_args; then + eval $func_select_var=\$func_select_a_$REPLY + else + eval $func_select_var= + fi + else + eval $func_select_var= + fi + return 0 + fi + else + eval $func_select_var= + return 1 + fi + done +} # Specify default values for environment variables if they are unset. : ${AWK=awk} @@ -62,7 +115,7 @@ # Work around a bug in bash 1.14.7 and earlier, where $PS3 is sent to stdout. -case $(echo 1 | (select x in x; do break; done) 2>/dev/null) in +case $(echo 1 | (while func_select x in x; do break; done) 2>/dev/ null) in ?*) PS3= esac @@ -82,7 +135,7 @@ echo >&2 'Please select a continent or ocean.' - select continent in \ + while func_select continent in \ Africa \ Americas \ Antarctica \ @@ -162,7 +215,7 @@ case $countries in *"$newline"*) echo >&2 'Please select a country.' - select country in $countries + while func_select country in $countries do case $country in '') echo >&2 'Please enter a number in range.';; @@ -201,7 +254,7 @@ *"$newline"*) echo >&2 'Please select one of the following' \ 'time zone regions.' - select region in $regions + while func_select region in $regions do case $region in '') echo >&2 'Please enter a number in range.';; @@ -278,7 +331,7 @@ echo >&2 "Is the above information OK?" ok= - select ok in Yes No + while func_select ok in Yes No do case $ok in '') echo >&2 'Please enter 1 for Yes, or 2 for No.';; -- Peter Seebach <peter.seebach(a)windriver.com> Listen, get this. Nobody with a good compiler needs to be justified.

1 0

NIST Time and Frequency FAQ
by Dave Cantor 22 Jun '09

22 Jun '09

In support of the current decision to allow the use of 2400 to indicate midnight at the end of a day, here's a pointer to an article published by NIST. http://tf.nist.gov/general/misc.htm Perhaps, this pointer, or an excerpt of the article, should appear somewhere in the theory file. Dave C.

1 0

Brazil considering a common time zone
by Steffen Thorsen 20 Jun '09

20 Jun '09

There is a proposal to have all of Brazil follow Brasilia's time zone. The proposal received a Senate committee approval on Tuesday, June 16, 2009, it is No 486, 2008 is available in PDF (and Portuguese) here: http://legis.senado.gov.br/mate/servlet/PDFMateServlet?s=http://www.senado.… It will probably be debated, and there are no dates yet for when such a possible change will be observed from. We provide some background info about it here: http://www.timeanddate.com/news/time/brazil-one-time-zone.html Best regards, Steffen Thorsen - timeanddate.com

3 3