Māgha Pūjā or Makha Bucha (Lao: ມະຄະບູຊາ; Thai: มาฆบูชา Khmer: មាឃបូជា) is an important Buddhist festival on the full moon day of the third lunar month (this usually falls in February). The third lunar month is known in the Thai language as Makha (Pali: Māgha); Bucha is also a Thai word (Pali: Pūjā), meaning "to venerate" or "to honor". As such, Makha Bucha Day is for the veneration of Buddha and his teachings on the full moon day of the third lunar month.
The spiritual aims of the day are: not to commit any kind of sins; do only good; purify one's mind.
Māgha Pūjā is a public holiday in Thailand, Laos and Cambodia.
- In the evening of Magha full-moon day, each temple in Thailand holds a candlelight procession called a wian tian (wian meaning circle; tianmeaning candle). Holding flowers, incense and a lighted candle, the monks and congregation members circumambulate clockwise three times around the Uposatha Hall - once for each of the Three Jewels – the Buddha, the Dharma, and the Sangha.
- Tum Boon: Making merit by going to temples for special observances and join in the other Buddhist activities.
- Rub Sil': Keeping the Five Precepts. Practise of renunciation: Observe the Eight Precepts, practice of meditation and mental discipline, stay in the temple, wearing white robes, for a number of days.