Māgha Pūjā
Māgha Pūjā (also written as Makha Bucha Day, Meak Bochea) is a Buddhist festival celebrated on the full moon day of the third lunar month in Cambodia, Laos, Thailand, Sri Lanka and on the full moon day of Tabaung in Myanmar. It is the second most important Buddhist festival after Vesak; it celebrates a gathering that was held between the Buddha and 1,250 of his first disciples, which, according to tradition, preceded the custom of periodic recitation of discipline by monks.