The official announcement was made by the Office of the Chularatchamontri after the crescent of the new moon was not seen on Saturday in Yala and other areas of the country.
Many Muslims were busy on Saturday buying fresh food and dates in preparation for their first pre-dawn meals. The Thepviwat Muang Pattani Market was especially congested and for traders it was a blessing.
Beef seller Awae Hamad said his sales were double their normal levels.
"God willing, my beef is selling well. On normal days, I can sell 100 kilogrammes but today I sold more. The buyers are from within the town of Pattani," he told Bernama News Agency.