Good Morning Everyone; I am really glad that I have joined this mailing list. I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet]) If you can think of incorporating these changes during the new version of tzdata, our servers are suffering ! Regards -- *Mohamed Essedik Najd* Bachelor of Science in Computer Science Student Minor in Communication Studies Ifrane's Gtug Manager Google Student Ambassador Freelancer Phone: 00212 (0) 663 311 055 Google+ : http:/gplus.to/kensuke e-mail: es.najd@gmail.com website: http://kenix.info <http://blog.kenix.info/>
On 2012-05-16 09:26, Mohamed Essedik Najd wrote:
Good Morning Everyone;
I am really glad that I have joined this mailing list.
I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet])
I know establishing the start of Ramadan isn't an exact science, but surely there are lower and upper bounds that law-makers could use for DST purposes? -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
not to my knowledge sir On Wed, May 16, 2012 at 8:59 AM, Ian Abbott <abbotti@mev.co.uk> wrote:
On 2012-05-16 09:26, Mohamed Essedik Najd wrote:
Good Morning Everyone;
I am really glad that I have joined this mailing list.
I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet])
I know establishing the start of Ramadan isn't an exact science, but surely there are lower and upper bounds that law-makers could use for DST purposes?
-- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
-- *Mohamed Essedik Najd* Bachelor of Science in Computer Science Student Minor in Communication Studies Ifrane's Gtug Manager Google Student Ambassador Freelancer Phone: 00212 (0) 663 311 055 Google+ : http:/gplus.to/kensuke e-mail: es.najd@gmail.com website: http://kenix.info <http://blog.kenix.info/>
Regarding calculating Ramadan: The Islamic calendar is lunar, not solar, and is about 11 or 12 days shorter than the "normal" Gregorian calendar. Months (including Ramadan) start when the first crescent of a new moon is sighted. This varies according to the atmospheric conditions and the exact positions of earth, sun and moon, but can be calculated to within about a day for any given location, which is good enough for tz data in the absence of any further specific information for a location. There is also an ongoing debate in Islam on whether the calculated date is good enough, or whether they should stick with past practice of having official observers watching the sky to announce the start of the month. What cannot be done is to say that it always falls between a given pair of Gregorian calendar dates, due to its shifting. Tim Smartcom Software Ltd Portsmouth Technopole Kingston Crescent Portsmouth PO2 8FA United Kingdom www.smartcomsoftware.com Smartcom Software is a limited company registered in England and Wales, registered number 05641521. -----Original Message----- From: tz-bounces@iana.org [mailto:tz-bounces@iana.org] On Behalf Of Ian Abbott Sent: 16 May 2012 09:59 To: tz@iana.org Subject: Re: [tz] Morocco Daylight Saving Time On 2012-05-16 09:26, Mohamed Essedik Najd wrote:
Good Morning Everyone;
I am really glad that I have joined this mailing list.
I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet])
I know establishing the start of Ramadan isn't an exact science, but surely there are lower and upper bounds that law-makers could use for DST purposes? -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
On 2012-05-16 10:28, Tim Thornton wrote:
Regarding calculating Ramadan: The Islamic calendar is lunar, not solar, and is about 11 or 12 days shorter than the "normal" Gregorian calendar. Months (including Ramadan) start when the first crescent of a new moon is sighted. This varies according to the atmospheric conditions and the exact positions of earth, sun and moon, but can be calculated to within about a day for any given location, which is good enough for tz data in the absence of any further specific information for a location. There is also an ongoing debate in Islam on whether the calculated date is good enough, or whether they should stick with past practice of having official observers watching the sky to announce the start of the month. What cannot be done is to say that it always falls between a given pair of Gregorian calendar dates, due to its shifting.
Tim
In practice, how much does the observed (as in astronomical) date differ from the calculated date? Does it ever start _before_ the calculated date? -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
Generally it is within a day. Off the top of my head I cannot say whether the error always lies on one side, but the calcs could be tweaked to always be on the safe side, however that may be defined. Tim Smartcom Software Ltd Portsmouth Technopole Kingston Crescent Portsmouth PO2 8FA United Kingdom www.smartcomsoftware.com Smartcom Software is a limited company registered in England and Wales, registered number 05641521. -----Original Message----- From: tz-bounces@iana.org [mailto:tz-bounces@iana.org] On Behalf Of Ian Abbott Sent: 16 May 2012 11:29 To: tz@iana.org Subject: Re: [tz] Calculating dates of Ramadan On 2012-05-16 10:28, Tim Thornton wrote:
Regarding calculating Ramadan: The Islamic calendar is lunar, not solar, and is about 11 or 12 days shorter than the "normal" Gregorian calendar. Months (including Ramadan) start when the first crescent of a new moon is sighted. This varies according to the atmospheric conditions and the exact positions of earth, sun and moon, but can be calculated to within about a day for any given location, which is good enough for tz data in the absence of any further specific information for a location. There is also an ongoing debate in Islam on whether the calculated date is good enough, or whether they should stick with past practice of having official observers watching the sky to announce the start of the month. What cannot be done is to say that it always falls between a given pair of Gregorian calendar dates, due to its shifting.
Tim
In practice, how much does the observed (as in astronomical) date differ from the calculated date? Does it ever start _before_ the calculated date? -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
Different countries calculate a 'secular' start of Islamic month differently than others. I am aware for example that the astronomical rules used to calculate this 'secular' stat of month are different in Egypt, than in Saudi Arabia or Pakistan. But the Imams have the right to declare the religious start of month whenever they deem fit, which in the case of some countries could be before the their 'secular' calculation. On 2012-05-16 6:29, Ian Abbott wrote:
On 2012-05-16 10:28, Tim Thornton wrote:
Regarding calculating Ramadan: The Islamic calendar is lunar, not solar, and is about 11 or 12 days shorter than the "normal" Gregorian calendar. Months (including Ramadan) start when the first crescent of a new moon is sighted. This varies according to the atmospheric conditions and the exact positions of earth, sun and moon, but can be calculated to within about a day for any given location, which is good enough for tz data in the absence of any further specific information for a location. There is also an ongoing debate in Islam on whether the calculated date is good enough, or whether they should stick with past practice of having official observers watching the sky to announce the start of the month. What cannot be done is to say that it always falls between a given pair of Gregorian calendar dates, due to its shifting.
Tim
In practice, how much does the observed (as in astronomical) date differ from the calculated date? Does it ever start _before_ the calculated date?
--
Even within Pakistan we have different moon sightings in different areas or even different moon sightings in one area. For example the Imams in Peshawar are consistently different :-) Ashar On 16 May 2012 16:57, David Patte <dpatte@relativedata.com> wrote:
Different countries calculate a 'secular' start of Islamic month differently than others. I am aware for example that the astronomical rules used to calculate this 'secular' stat of month are different in Egypt, than in Saudi Arabia or Pakistan. But the Imams have the right to declare the religious start of month whenever they deem fit, which in the case of some countries could be before the their 'secular' calculation.
On 2012-05-16 6:29, Ian Abbott wrote:
On 2012-05-16 10:28, Tim Thornton wrote:
Regarding calculating Ramadan: The Islamic calendar is lunar, not solar, and is about 11 or 12 days shorter than the "normal" Gregorian calendar. Months (including Ramadan) start when the first crescent of a new moon is sighted. This varies according to the atmospheric conditions and the exact positions of earth, sun and moon, but can be calculated to within about a day for any given location, which is good enough for tz data in the absence of any further specific information for a location. There is also an ongoing debate in Islam on whether the calculated date is good enough, or whether they should stick with past practice of having official observers watching the sky to announce the start of the month. What cannot be done is to say that it always falls between a given pair of Gregorian calendar dates, due to its shifting.
Tim
In practice, how much does the observed (as in astronomical) date differ from the calculated date? Does it ever start _before_ the calculated date?
--
On Wed, May 16, 2012, at 08:26, Mohamed Essedik Najd wrote:
I am really glad that I have joined this mailing list.
I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet]) If you can think of incorporating these changes during the new version of tzdata, our servers are suffering !
do you have the FR press/official text ? --- Sébastien WILLEMIJNS
The communiqué that is published is in Arabic. However, here is an article in English from timeanddate.com that precises the issue: http://www.timeanddate.com/news/time/morocco-dst-2012.html On Wed, May 16, 2012 at 9:14 AM, Sebastien WILLEMIJNS < bypass-tz.icann.org@willemijns.com> wrote:
On Wed, May 16, 2012, at 08:26, Mohamed Essedik Najd wrote:
I am really glad that I have joined this mailing list.
I just wanted to tell you that Morocco passed to DST during the last week end of April and this will remain active till the last weekend of September , with a suspension during Ramadan (Roughly between 20 July, 19 august, [Lunar Month, not sure yet]) If you can think of incorporating these changes during the new version of tzdata, our servers are suffering !
do you have the FR press/official text ? ---
Sébastien WILLEMIJNS
-- *Mohamed Essedik Najd* Bachelor of Science in Computer Science Student Minor in Communication Studies Ifrane's Gtug Manager Google Student Ambassador Freelancer Phone: 00212 (0) 663 311 055 Google+ : http:/gplus.to/kensuke e-mail: es.najd@gmail.com website: http://kenix.info <http://blog.kenix.info/>
participants (6)
-
Ashar/LP -
David Patte -
Ian Abbott -
Mohamed Essedik Najd -
Sebastien WILLEMIJNS -
Tim Thornton