Bon Om Touk (Khmer: បុណ្យអុំទូក, IPA: [bon om tuːk]), or the Cambodian Water Festival, is a Cambodian festival celebrated in November and marks a reversal of the flow of the Tonle Sap River. Every town and province joins in with the festival but the biggest celebrations take place in Phnom Penh with boat racing along the Sisowath Quay. For three days, workers from every province join with the city's residents to celebrate by night and day. The festival lasts for three days, and commemorates the end of the country's rainy season, as well as the reversal of flow of the Tonle Sap River. It includes boat races and concerts, and attracts several million people each year.
Ak Ambok (Khmer: អកអំបូក, IPA: [ʔɑk ɑmboːk]) is named after the rice dish which forms part of the Bon Om Tuk ceremony. Rice is fried in the husk and then pounded with a giant pestle. The husks are removed and the special rice mixed with coconut and banana. This traditional Khmer dish is sold throughout the festival: Ak Ambok, Sampheah Preah Khae, and Bandaet Pratip
Sampeah Preah Khae (Khmer: សំពះព្រះខែ, IPA: [sɑmpeəʰ preəʰ kʰaːe]) is a ceremony in which salutations are made to the moon. After the Sampeah Preah Khae ceremony people gather at a pagoda at midnight for Ak Ambok.