The sighting of the moon indicates that Friday, Aug 2, would be Zul Hijjah 1. The festival of Eid-ul-Azha will begin on Sunday, August 11, after the crescent moon was sighted in Saudi Arabia on Thursday evening. The sighting of the moon indicates that Friday, August 2, would be Zul Hijjah 1. The crescent was reportedly seen from Saudi Arabia's Tumair observatory.