After the Buddhist Lent Day end three days, it's End of The Buddhist Lent Day. Buddhist would to merit making is a special case. Like Offerings in a monk's alms bowl in the morning, offering to Sangathan, to making merit at the temple, Offering food, listen to sermons, And the Tak Baat Devo following day.
Actually, we call it “Wan Ok Phansa” and before the end of Buddhist Lent Day, we are called '' Wan Asalaha Bucha '' in Thai. Which falls on the 15th day of the 8th lunar month.