Global Moonsighting, a Modern Bidah
   An analysis of problems in calculating key dates in the Muslim calendar, and possible interferences.
   http://73k.org/bid3ah/globalsighting.html

Moonsighting.com
   Information on sighting of the moon for every month and Eid dates. Includes articles (including a critical analysis of on-line prayer time calculators) by Khalid Shaukat, a consultant to Islamic Society of North America.
   http://moonsighting.com/