Loy Krathong is a thai tradition practiced since the ancient time. It begins from the middle of October until the middle of November in the time of high-level river which is full of water. The popular time for the festival is in November full moon shine, because of the full moon. The moon's light makes the river look clear and clean in the night.

The word loy means to float, and a krathong is a banana leaf cup. People place a candle and incense sticks in their krathongs and then float them on a local river or pond. As they push away their krathong, they ask for forgiveness in polluting the waterways and also for good luck in the coming months.