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-%C3... 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.
On 3/16/23 01:26, EL MAAYATI Afaf wrote:
(https://www.iana.org/time-zones <https://www.iana.org/time-zones>), for Africa region, and especially for Morocco, it’s mentioned that a program will be running to implement the transition dates.
Yes, I wrote that program to guess what Moroccan authorities will do in the future. Unfortunately, I don't know how to predict what Moroccan authorities will do, atop the underlying well-known uncertainty about when Ramadan will occur. The program I wrote was conservative: when it wasn't absolutely sure that Ramadan would end by a certain time, it delayed the spring-forward transition by another week. This year Moroccan authorities did not delay similarly - i.e., they were less conservative than I was. Possibly this is because their astronomical calculations are more precise than mine, so that they can afford to be more aggressive in their predictions. I worked around the 2023 problem by using a more-aggressive calculation as described here: https://mm.icann.org/pipermail/tz/2023-March/032709.html and this fix should be in the next tzdb release, which should be published soon. This patch affects spring-forward predictions for 2023, 2031, 2038, 2046, etc. However, it's likely that in the future the tzdb tables will need to be corrected again, as Moroccan authorities' calculation method evidently differs from the one published in tzdb. If someone could let us know exactly how the Moroccan authorities calculate DST start and end time, we could presumably fix the tzdb calculations to match. This should avoid the need for last-minute corrections and so would make Morocco's clocks more reliable.
Dear Paul, Thank you for your prompt feedback. Please let us know once the fix for 2023 issue is implemented. Best Regards, Afaf EL MAAYATI National Telecommunications Regulatory Agency Morocco -----Message d'origine----- De : Paul Eggert <eggert@cs.ucla.edu> Envoyé : jeudi 16 mars 2023 19:07 À : EL MAAYATI Afaf <afaf@anrt.ma> Cc : Naela Sarras <naela.sarras@icann.org>; kim.davies@icann.org; ma <ma@anrt.ma>; Time Zone Mailing List <tz@iana.org> Objet : Re: Time Zone Database On 3/16/23 01:26, EL MAAYATI Afaf wrote:
(https://www.iana.org/time-zones <https://www.iana.org/time-zones>),
for Africa region, and especially for Morocco, it’s mentioned that a
program will be running to implement the transition dates.
Yes, I wrote that program to guess what Moroccan authorities will do in the future. Unfortunately, I don't know how to predict what Moroccan authorities will do, atop the underlying well-known uncertainty about when Ramadan will occur. The program I wrote was conservative: when it wasn't absolutely sure that Ramadan would end by a certain time, it delayed the spring-forward transition by another week. This year Moroccan authorities did not delay similarly - i.e., they were less conservative than I was. Possibly this is because their astronomical calculations are more precise than mine, so that they can afford to be more aggressive in their predictions. I worked around the 2023 problem by using a more-aggressive calculation as described here: https://mm.icann.org/pipermail/tz/2023-March/032709.html and this fix should be in the next tzdb release, which should be published soon. This patch affects spring-forward predictions for 2023, 2031, 2038, 2046, etc. However, it's likely that in the future the tzdb tables will need to be corrected again, as Moroccan authorities' calculation method evidently differs from the one published in tzdb. If someone could let us know exactly how the Moroccan authorities calculate DST start and end time, we could presumably fix the tzdb calculations to match. This should avoid the need for last-minute corrections and so would make Morocco's clocks more reliable. [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.
On 2023-03-22 05:47, EL MAAYATI Afaf wrote:
Please let us know once the fix for 2023 issue is implemented.
I plan to send an announcement of the next releasee to the tz-announce mailing list. You can subscribe to it here: https://mm.icann.org/mailman/listinfo/tz-announce and see archives here: https://mm.icann.org/pipermail/tz-announce/
participants (2)
-
EL MAAYATI Afaf -
Paul Eggert