Based on authentic moonsighting, when was Eid-al-Fitr 1423 AH?
On 4th Dec 2002, the crescent was invisible from almost all areas of the world. There was a remote chance of seeing it off the west coast of South America / Polynesian Islands on 4th Dec 2002 with optical aid but no reports were received. Reports from Hawaii say that moon was not seen in clear skies. ISNA’s methodology for determining the beginning of Ramadan and Shawwal for North America has been consistent since 1993. ISNA keeps telephone lines open to receive any witness of sighting on the relevant evenings. After receving the witness ISNA asks its astronomer consultants to evaulate it by talking to the witness. If the witness of sighting contradicts with indisputable scientific evidence then only it is rejected. This time for Shawwal 1423, not a single claim came to ISNA on Dec 4. ISNA waited until 6:30pm PST which was 90 minutes after sunset on west coast giving ample time to receive any witness of sighting. It was past 10:30pm on East coast of Canada and was getting too late in t