The Cambodian Water Festival (Bon Om Touk) takes place once a year, on the full moon of the Buddhist month of Kadeuk (usually in November). It celebrates a major natural occurrence: the reversing flow between the Tonle Sap and the Mekong River. This natural occurrence is celebrated in Cambodia with three days of festivals, fluvial parades, boat races, fireworks, and general merriment.
People come from far and wide to join the celebrations. Upwards of a million Cambodians attend the celebrations at Phnom Penh to take in the wholesome carnival atmosphere. Food and drink overflow in the streets, Khmer pop bands entertain the crowds, and the riversides are packed to capacity with punters cheering their favorite boats on.