September 2023 - tz - lists.iana.org

Time Zone Database
by EL MAAYATI Afaf July 8, 2026

July 8, 2026

Dear Paul, I'm Afaf EL MAAYATI from National Telecommunications Regulatory Agency in Morocco. Actually, in the current version of Time Zone Database (https://www.iana.org/time-zones) for Africa region, and especially for Morocco, it’s mentionned that a program will be running to implement the transition dates. According to this program, the next transition dates (during 2023) are as below : - March 19, 2023 (switching to GMT). - April 30, 2023 (switching back to GMT+1). In fact, we will switch back to GMT+1, advancing 60 minutes, on Sunday, April 23 at 2:00 a.m (not on April 30). Please refer to the official annoncement, published by the Ministry of Digital Transition and Administration Reform: https://www.mmsp.gov.ma/fr/actualites/passage-%C3%A0-l%E2%80%99heure-gmt-%C… So, would you please update the program, in order to consider « April 23 at 2:00 a.m » (for switching back to GMT+1). Thank you in advance for your feedback and for your habitual support. Thank you. Best Regards, Afaf EL MAAYATI National Telecommunications Regulatory Agency Morocco [https://www.anrt.ma/images/ANRT-Signature.jpg] ________________________________ Ce message, son contenu et toutes les pièces jointes sont adressés à l'attention exclusive de leur (s) destinataire (s) et sont strictement confidentiels : ils relèvent de la correspondance privée. Toute publication, utilisation ou diffusion, même partielle, par des personnes autres que les destinataires est interdite et doit être autorisée par l'Agence Nationale de Règlementation des Télécommunications (ANRT, Royaume du Maroc). Si vous recevez ce message par erreur, nous vous prions de le détruire après en avoir informé son expéditeur sans délai. L’ANRT décline toute responsabilité pour toute altération, déformation ou falsification subi par le message et ses pièces jointes au cours de leur transmission. Retrouvez toutes les informations de l’ANRT sur son site Web à l’adresse suivante : http://www.anrt.ma. ________________________________ This message, its content and its attachments are intended for the exclusive use of the named addressee (s) and are strictly confidential. Any copy or other use of this information by persons or entities other than the intended recipient is prohibited and should be authorized by the National Agency of Telecommunications Regulation (ANRT, Morocco). If you have received this communication in error, please delete the material and notify the sender. The ANRT accepts no liability for any alteration, distortion or falsification that may occur during the transmission of this message. All information about ANRT can be found on our website at the following address http://www.anrt.ma. ________________________________ إن هذه الرسالة ومحتواها ومرفقاتها موجهة خصيصا للشخص المرسل إليه وتعتبر سرية وتصنف ضمن خانة المراسلات ذات طبيعة شخصية. ويمنع منعا كليا نشر أو استعمال أو بث، ولو بطريقة جزئية، لهذه الرسالة من طرف أشخاص غير المرسل إليهم ما لم يتم الترخيص بذلك من طرف الوكالة الوطنية لتقنين المواصلات (المملكة المغربية. في حالة ما إذا توصلتم هذه الرسالة عن طريق الخطأ، يرجى منكم العمل على إتلافها فورا بعد إخبار الشخص المرسل إليه بذلك. ولا تتحمل الوكالة الوطنية لتقنين المواصلات أي مسؤولية عن أي تحريف أو تغيير أو تزييف قد يلحق بمحتوى الرسالة أو بمرفقاتها خلال عملية الإرسال. للمزيد من المعلومات، يرجى الاطلاع على الموقع الإلكتروني للوكالة الوطنية لتقنين المواصلات : http://www.anrt.ma.

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(no subject)
by Cool Gab19 Nov. 8, 2024

Nov. 8, 2024

can you add Philippine Daylight Time on your Database I think it was missing from the list of the time zones please reply immediately if solved thanks...

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Re: [tz] Time for a Lunar time zone? -Brooks
by Paul Eggert July 11, 2024

July 11, 2024

On 3/2/23 09:51, Brooks Harris wrote: > Will we need DST on the Moon? :-) I hope not! The Moon's axis tilts only 1.5°, much less than the 23.5° of Earth's axis, so seasonal effects on sunlight duration are much less intense on the Moon and there should be less need for Earth-like DST. A more pressing issue is that the length of day (including daytime and nighttime) varies more on the Moon. Local Earth days vary by at most 0.008 hours from the mean of 24 hours (this variation is due to the eccentricity of the Earth orbit and the obliquity of the ecliptic). So people who think that every local Earth day is exactly 24 hours are not far off. Local lunar days, in contrast, are roughly 29.5 ± 0.25 Earth days (again, this includes both lunar daytime and lunar nighttime). That's more slop to deal with, relatively speaking, and dealing with varying-length days could be a bit of a problem for civil time on the Moon. Presumably ESA's boffins are on top of this.....

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Ministry of Digital Development and Communications, the Government of Mongolia
by fr Jan. 7, 2024

Jan. 7, 2024

Dear Sir/Ma'am, As we sent an inquiry regarding the switching time to the regular summer time matter earlier, could you please provide us some recommendations on below. The Government of Mongolia is planning to switch to the regular summer time from 22-26 March, 2024. Currently, the discussions are made within the Government as well as at the Parliament. We expect that final decision will be made in the October. Therefore, is it possible to arrange the switching process in the next 5 months? Is there any extraordinary cases like us or not? Or shall we make our changes in the September 2024? Thank you for your kind consideration in advance and hope to hear from you soon. Sincerely, Ms. Ariuntuul --- Foreign Cooperation Division Ministry of Digital Development and Communications The Government of Mongolia Tel: +976 51 260636 www.mddc.gov.mn

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Did Greenland abolish daylight saving from 2024 on?
by Paul Eggert Nov. 20, 2023

Nov. 20, 2023

This week several English-language news sources reported that Greenland has moved its clocks forward for the last time. These reports disagree with current TZDB[1], which follows Thomas M. Steenholdt's December email[2] saying that although in November Greenlanders voted to not fall back this fall, they also voted to continue to observe daylight saving time (DST) next year, effectively moving their time zone one hour east instead of abolishing DST. There's no disagreement about timekeeping this year. The first point of disagreement is March 30, 2024 at 23:00, when TZDB says Nuuk, Greenland will spring forward to 24:00, whereas the recent news reports say clocks will neither spring forward nor fall back during 2024. So who's right: Steenholdt in December, or these several recent news reports? Currently TZDB goes with Steenholdt. After all, he cited the relevant Greenland legislation and his email address ends in ".gl". I suppose another possibility, though, is that Greenland's government has changed its mind since November. However, if so I'd like to see citations to the newer legislation. The earliest recent news story I found on this topic was a week ago by Lebawit Lily Girma[3], senior travel news reporter for Bloomberg Pursuits. I'm taking the liberty of bcc'ing Girma to see if she can help get to the bottom of the situation. [1]: https://iana.org/tz [2]: https://mm.icann.org/pipermail/tz/2022-December/032402.html [3]: Girma LL. Greenland Solves the Daylight Saving Time Debate. Bloomberg. 2023-03-24. https://www.bloomberg.com/news/articles/2023-03-24/greenland-keeps-daylight… Here are some of the other news reports I found. Greenland to stay in daylight saving time forever. AP. 2023-03-27. https://apnews.com/article/greenland-daylight-saving-summertime-utc-gmt-3b5… Martin M. Greenland is keeping daylight saving time permanently. NPR. 2023-03-28. https://www.wunc.org/2023-03-28/greenland-is-keeping-daylight-saving-time-p… Selcho M. Here’s why Greenland is permanently keeping daylight saving time. Deseret News. 2023-03-28. https://www.deseret.com/u-s-world/2023/3/28/23660379/why-greenland-keeping-… Jerusalem Post staff. Greenland changed their clocks to daylight savings for the last time. Jerusalem Post. 2023-03-29. https://www.jpost.com/international/article-735751 Carpineti A. Greenland Has Changed Its Clocks For The Last Time, Embracing Daylight Savings Forever. IFLScience. 2023-03-29. https://www.iflscience.com/greenland-has-changed-its-clocks-for-the-last-ti…

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DST in Fiji this year
by Almaz Mingaleev Oct. 6, 2023

Oct. 6, 2023

In 2022f Fiji's DST was suspended <https://github.com/eggert/tz/blob/861b58589c66b1db6aedbae70961446d86b6f808/…> indefinitely (original post was about 2022-2023 only). Does anyone know what is Fiji's government plan for 2023-2024? Thanks, Almaz

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Notification for daylight saving time in SYRIA
by Radio Frequency Spectrum, SyTPRA Sept. 20, 2023

Sept. 20, 2023

Dear Madam/Sir, Please find attached a correspondence from Syrian Administration. Best regards MHD Atef AL Dairy Deputy Director General, SyTPRA The focal point at Syrian Telecommunication & Post Regulatory Authority

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2023c install issue
by Rune Torgersen Sept. 18, 2023

Sept. 18, 2023

Hi , trying to update tzdata/code on an embedded device. Last install I did was in 2016, so been a while. System is an old linux system (GCC 4.1.2, GLIBC 2.5), with some updates over the years. However I get a zic error on installing the zone files: ./zic: Can't link /usr/share/zoneinfo/Africa/Abidjan to /usr/share/zoneinfo/Africa/Accra: Invalid argument Complete output: make CFLAGS='-std=gnu99' TZDIR=/usr/share/zoneinfo install VERSION=`cat version` && sed \ -e 's|#!/bin/bash|#!/bin/bash|g' \ -e 's|AWK=[^}]*|AWK='\''awk'\''|g' \ -e 's|$PKGVERSION$=.*|\1='\''(tzcode) '\''|' \ -e 's|$REPORT_BUGS_TO$=.*|\1=tz(a)iana.org|' \ -e 's|TZDIR=[^}]*|TZDIR=/usr/share/zoneinfo|' \ -e 's|$TZVERSION$=.*|\1='"$VERSION"'|' \ <tzselect.ksh >tzselect.out chmod +x tzselect.out mv tzselect.out tzselect VERSION=`cat version` && printf '%s\n' \ 'static char const PKGVERSION[]="(tzcode) ";' \ "static char const TZVERSION[]=\"$VERSION\";" \ 'static char const REPORT_BUGS_TO[]=tz(a)iana.org<mailto:tz@iana.org>;' \ >version.h.out mv version.h.out version.h cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o zic.o zic.c cc -DTZDIR='"/usr/share/zoneinfo"' -o zic -std=gnu99 zic.o cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o zdump.o zdump.c cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o localtime.o localtime.c localtime.c: In function 'tzloadbody': localtime.c:698: warning: comparison is always false due to limited range of data type localtime.c:708: warning: comparison is always false due to limited range of data type cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o asctime.o asctime.c cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o strftime.o strftime.c cc -DTZDIR='"/usr/share/zoneinfo"' -o zdump -std=gnu99 zdump.o localtime.o asctime.o strftime.o cc -DTZDIR='"/usr/share/zoneinfo"' -std=gnu99 -c -o difftime.o difftime.c rm -f libtz.a ar -rc libtz.a localtime.o asctime.o difftime.o strftime.o : libtz.a awk \ -v DATAFORM=`expr main.zi : '$.*$.zi'` \ -v PACKRATDATA='' \ -v PACKRATLIST='' \ -f ziguard.awk \ africa antarctica asia australasia europe northamerica southamerica etcetera factory backward >main.zi.out mv main.zi.out main.zi version=`sed 1q version` && \ LC_ALL=C awk \ -v dataform='main' \ -v deps='ziguard.awk africa antarctica asia australasia europe northamerica southamerica etcetera factory backward zishrink.awk' \ -v redo='posix_right' \ -v version="$version" \ -f zishrink.awk \ main.zi >tzdata.zi.out mv tzdata.zi.out tzdata.zi awk \ -v DATAFORM=`expr vanguard.zi : '$.*$.zi'` \ -v PACKRATDATA='' \ -v PACKRATLIST='' \ -f ziguard.awk \ africa antarctica asia australasia europe northamerica southamerica etcetera factory backward >vanguard.zi.out mv vanguard.zi.out vanguard.zi awk \ -v DATAFORM=`expr rearguard.zi : '$.*$.zi'` \ -v PACKRATDATA='' \ -v PACKRATLIST='' \ -f ziguard.awk \ africa antarctica asia australasia europe northamerica southamerica etcetera factory backward >rearguard.zi.out mv rearguard.zi.out rearguard.zi make BACKWARD='backward' DESTDIR='' LEAPSECONDS='' PACKRATDATA='' PACKRATLIST='' TZDEFAULT='/etc/localtime' TZDIR='/usr/share/zoneinfo' ZIC='./zic ' LEAPSECONDS= install_data make[1]: Entering directory `/vmfs/devroot/tz' ./zic -d '/usr/share/zoneinfo' tzdata.zi ./zic: Can't link /usr/share/zoneinfo/Africa/Abidjan to /usr/share/zoneinfo/Africa/Accra: Invalid argument make[1]: *** [install_data] Error 1 make[1]: Leaving directory `/vmfs/devroot/tz' make: *** [posix_only] Error 2 Rune Torgersen Senior Engineer Innovative Systems LLC

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TZ patch to fix broken link
by Matthew Boynes Sept. 11, 2023

Sept. 11, 2023

Hello TZ group, Attached is a patch to fix a broken link in the africa file. Following the guidelines in the contributions file <https://github.com/eggert/tz/blob/main/CONTRIBUTING>, it sounded like this was the preferred place to email the patch, but please redirect me if it should go elsewhere. Thanks! Matt Boynes

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Danish standard time will probably officially be based on UTC
by Jonas Nyrup Sept. 9, 2023

Sept. 9, 2023

Since 1893-03-29 Danish standard time has been defined as "the mean solar time for the 15th degree of longitude east of Greenwich" (machine translated of the offical law). With the introduction of UTC we didn't update that law, but we did start using UTC+1 as standard time in practice. So for around 50 years maybe only astronomers have been following the law. The Minister of Transportation has now proposed a bill to update the law to define Danish standard time as UTC+1 to keep up with reality. At the first reading all political parties expressed their support and jokingly noted that "it was about time". The updated law is expected to take effect on 2023-03-26. The current law: https://www.retsinformation.dk/eli/lta/1893/83 The bill: https://www.ft.dk/samling/20222/lovforslag/l19/index.htm Tom Scott on the subject: https://www.youtube.com/watch?v=yRz-Dl60Lfc Jonas Nyrup

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