Understanding the Buddhist Era (B.E.) Calendar in Cambodia

The Buddhist Era (B.E., or ពុទ្ធសករាជ "Putheak Sakaraj" in Khmer) is a traditional calendar epoch used extensively across Theravada Buddhist nations of Southeast Asia, including Cambodia, Thailand, Laos, and Myanmar. The era marks the year Gautama Buddha attained Parinirvana (passing away) at Kusinara.

In standard civil usage, the basic conversion between the Common Era (CE / AD) and Buddhist Era is straightforward: • Buddhist Era (B.E.) = Common Era (CE) + 543 or 544 In Cambodia, the Buddhist Era year advances not on January 1st, but rather on the Full Moon day of the lunar month of Visak (ពិសាខ - typically falling in May). Therefore: 1. From January 1st until Visak Bochea: B.E. = CE + 543. 2. After Visak Bochea until December 31st: B.E. = CE + 544. In everyday civil and legal documents where solar dates are harmonized with civil calendars, a fixed standard of +543 or +544 is referenced based on official Royal Government circulars.

Cambodia celebrates essential cultural holidays according to the traditional lunar calendar: • Choul Chnam Thmey (Khmer New Year): Celebrated in mid-April (Maha Sangkran), transitioning to a new animal zodiac year (ជូត, ឆ្លូវ, ខាល...). • Pchum Ben (Ancestors Day): A 15-day commemoration culminating on the 15th day of the waning moon of Photrobot (ភទ្របទ). • Meak Bochea and Visak Bochea: Holy observances honoring landmark sermons and the Buddha's life milestones. • Water Festival (Bon Om Touk): Coinciding with the full moon of Kadeuk (កត្តិក), marking the reverse flow of the Tonle Sap river.