Saudi Arabia, UAE, Jordan, Libya and several Middle Eastern countries are observing the first fast of Ramazan on Wednesday.
Several groups in Peshawar, Chaman and the Khyber and Mohmand agencies, have also started fasting.
Meanwhile, a meeting of the Central Ruet-e-Hilal Committee will be held today to sight the moon of Ramazan in Pakistan.
All the Zonal Ruet-e-Hilal committees will meet at their respective headquarters.
The exact dates of the start and the end of Ramazan depend on the sighting of the new moon, as many countries reject using astronomical calculation for the Muslim lunar calendar.
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