[tz] Timezones Morocco 2013 incorrect

[Tim Thornton]

This site appears to have useful information on which countries use
calculated or observed sightings: http://moonsighting.com/methods.html
This whole subject is a big can of worms, and Yallop's method is just an
approximation and not accepted by all Muslims.
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 at iana.org [mailto:tz-bounces at iana.org] On Behalf Of Brian
Inglis
Sent: 05 March 2013 15:09
To: tz at iana.org
Subject: Re: [tz] Timezones Morocco 2013 incorrect

On 2013-03-04 02:18, Paul Eggert wrote:
> On 03/04/2013 12:52 AM, Erik Homoet wrote:
>> An official link for the announcement for this year I cannot find on 
>> official local websites but on all timezone and worldtime websites 
>> and airlines booking engines are using it.
>
> Thanks.  Last year it looks like the official announcement by the Head 
> of Government of the Kingdom of Morocco wasn't until July 11 (for July 
> 20 and August 20 transitions), so if we wait for something official 
> it'll be uncomfortably close to the actual event.  Here's last year's 
> announcement (in French):
>
> http://www.mmsp.gov.ma/fr/actualites.aspx?id=288
>
> I'm thinking of using the GNU Emacs predictions for Ramadan for 
> 2013-2037, whatever they are, and slapping them into the Morocco table 
> by hand, as predictions.  Any better suggestions are welcome.

GNU Emacs predictions may be usable if they take the location dependent
visibility of the new moon crescent into account (see references to Yallop's
method) but if this becomes more widespread, it may be better to develop (or
borrow) a script that will predict the start and end of Ramadan for any tz
location.