Buddhist Lent Day is a period of three lunar months during the rainy season when monks are required to remain in one particular place or wat (temple). Khao Phansa Day is on the first day after the full moon of the eighth lunar month and marks the beginning of the three-month Buddhist 'lent' period. The tradition of Buddhist Lent or the annual three-month rains retreat known in Thai as "Phansa". Khao Phansa means to remain in one place during the rainy season. Phansa represents a time of renewed spiritual vigor and Khao Phansa festival is a major Buddhism merit-making festival.
The day before Khao Phunsa Day is Asalha Puja Day. The day falls on the full moon of the eighth lunar month. This day is also very important in Buddhism. It was on this day that the Lord Buddha preached His sermon to followers after attaining enlightenment. The day is usually celebrated by merit making, listening to a monk's sermon, and joining a candle lit procession during the night.
