The Pakistan Meteorological Department has forecast that Eid-ul- Azha will fall on August 22, Wednesday.
There is a good chance of sighting the Zil-Haj moon on August 12, the Met Office said on Friday.
The Zil-Haj moon “will be born on Saturday afternoon” and will be visible on Sunday evening, it added.
In Saudi Arabia, it is likely that the month of Zil-Haj will begin on Sunday and Eid-ul-Azha will be celebrated on August 21.
Eid-ul-Azha is celebrated on the 10th day of Zil-Haj — which is the last month of the Islamic calendar and marks the start of the Hajj pilgrimage.
Eid-ul-Azha commemorates Prophet Ibrahim's willingness to sacrifice his son to show obedience to God.