Makha Bucha is a Buddhist holiday celebrated in Thailand, Cambodia, Laos and Myanmar. It takes place on the full moon day of the third lunar month. It marks the date of four auspicious events that took place in an Indian bamboo grove soon after the Buddha's enlightenment. On this day 1,250 enlightened disciples came to the bamboo grove without being told to in order to see the Buddha, each of them ordained by Buddha himself. When these disciples met they were given the princples of Buddhism.
Today Makha Bucha is celebrated by giving tamboon (merit) in the morning, usually by listening to a short sermon by a monk, chanting in pali (the ancient language of Buddhism), giving food to the monks, and celebrating and eating together afterwards. In the evening Buddhists return to the temple, light candles and incense, and walk three times around the chedi of the Wat.