This year it is a possibility that Pakistanis, Saudis may celebrate Eid on same day.
According to Pakistan MET office it is expected that new Shawwal moon will be sighted in Pakistan on 30th August (Tuesday) and Eid-ul-Fitr will be on 31st August.
While according to a UAE-based newspaper, the Islamic Crescent Observation Project (ICOP) has said that Eid-ul-Fitr this year will be celebrated in most of the Muslim countries on August 31 (Wednesday).
Therefore Pakistanis may celebrate this year Eid-ul-Fitr with Muslims in Saudi Arabia, the United Arab Emirates (UAE) and various other Islamic countries on August 31 (Wednesday).