The traditional date of the Burmese royal ploughing ceremony was the beginning of the Buddhist lent in the Burmese month of Waso (June to July).[6]
In 2009, the ceremony was held on May 11 in Thailand and on May 12 in Cambodia. The date is usually in May, but varies as it is determined by Hora (astrology) (Khmer: ហោរាសាស្រ្ត, hourasastr; Thai: โหราศาสตร์, horasat). In 2013, the ceremony and public holiday was held on Monday, 13 May.[7] In Cambodia, the ceremony is mostly held on a Tuesday or Saturday.