Sangha Day (Magha Puja Day or Fourfold Assembly Day)

Sangha Day commemorates the Buddha's visit to Veruvana Monastery in the city of Rajagaha, when 1,250 arhats are said to have spontaneously returned from their wanderings to pay their respects to the Buddha. Sangha Day is celebrated on the full moon day of the third lunar month (March).

Vesak (Buddha Day)

Vesak is the birthday of the Buddha and the most important festival in Buddhism. On the first full moon day in May, Buddhists all over the world celebrate the birth, enlightenment and death of the Buddha in a single day. The name "Vesak" comes from the Indian month of that name in which it is held.

Atthami Puja Day (Cremation of the Buddha's Body)

The Lord's spiritual disciples and group of Malla monarchs of Kusinara arranged the cremation of the Buddha's body.

Dhamma Day (Asalha Puja Day)

Dhamma Day is observed on the full moon day of the eighth lunar month (July). It commemorates the "turning of the wheel of the Dharma" - the Buddha's first sermon - at the Sarnath Deer Park.

Observance Day (Uposatha)

Observance Day refers to each of the four traditional monthly holy days that continue to be observed in Theravada countries - the new moon, full moon, and quarter moon days. It is known in Thailand as Wan Phra (Dhammasavana)