Khao Phansa is one of the most celebrated Buddhist festivals in Thailand. It falls on the day after the full moon of the eighth lunar month. It is the start of Buddhist Lent which marks the official start of the rainy season. Buddhist Lent is also known as Vassa and runs for three lunar months from July to October. During this time, it was traditional for monks to stay within their temples for study and adhere strictly to the teachings of the Lord Buddha.
The day before Khao Phansa is Asanha Bucha which commemorates the Buddha’s first teaching. It falls on the day of the full moon of the eighth lunar month (the day before Khao Phansa). There is a two-day national holiday & celebrations are held all around Thailand. Thai people like to make merit during this period and flock to temples. It is also a popular time for boys & men to be ordained as monks, thus achieving merit for themselves and their families. No alcohol is sold or consumed on either day & bars and entertainment places are closed.