Note: The dates shown on this page are the dates for Vesak as it is celebrated in Thailand.
In most countries in South-East Asia, Vesak is celebrated on the same date as in Thailand, or one day later. In China, dates are about a week earlier.
The exact date of Vesak varies according to the various lunar calendars used in different traditions. In Theravada countries following the Buddhist calendar, it falls on a full moon Uposatha day, typically in the 5th or 6th lunar month.