Buddha Purnima 2022:

Also known as Buddha Jayanti or Vaisakhi Buddha Purnima or Vesak, the festival of Buddha Purnima is based on the Asian lunisolar calendar and marks the birth of Gautama Buddha. It is celebrated with great fervour in India, Sri Lanka, Nepal, Bhutan, Tibet and numerous other South East Asian countries including Thailand, Tibet, China, Korea, Laos, Vietnam, Mongolia, Cambodia and Indonesia.
It falls on a full moon day in the month of Vaisakh (April/May) according to the Hindu calendar and this year, Buddha Purnima will be celebrated on Monday, May 16. The Vesak full moon day is the most important day in the Buddhist calendar.