A Muslim pilgrim prays as tens of thousands of Muslim pilgrims move around the Kaaba, the black cube seen at center, inside the Grand Mosque, during the annual Hajj Mecca, Saudi Arabia (AP)
Saudi Arabia's supreme court announced in an official statement on Friday that Eid Al-Adha will begin on Monday 12 September, and the Day of Arafah, which precedes the Eid festival, will be on Sunday 11 September.
The Day of Arafah marks the second day of Hajj pilgrimage at the holy site of Mecca in Saudi Arabia.
In July, Egypt's Astronomical and Geophysics Institute announced that the country would celebrate the first day of Eid Al-Adha on 11 September according to the institute's calculations.
However, the Saudi announcement means that Egypt will instead celebrate the first day of Eid on 12 September..
Eid Al-Adha, which lasts for four days, honours the willingness of the Prophet Abraham to sacrifice his first-born son Ismail as an act of submission to God.
It falls on a different date each year, as the Islamic calendar is based on lunar cycles.
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