The Khmer New Year, known locally as Chaul Chnam Thmey, occurs annually in mid-April and marks the most significant cultural celebration in Cambodia. The festival typically spans three days, beginning on April 13, 14, or 15 depending on the ancient astrological calendar called Mohasangkhan. Buddhist monks receive alms and offerings as families visit pagodas throughout the country. Traditional games include teanh prot, where participants throw a rolled scarf at standing targets, and chol chhoung, in which boys and girls toss a woven ball while singing folk songs. Homes undergo thorough cleaning before the new year arrives, and people wear new clothes to symbolize renewal. Cities like Phnom Penh and Siem Reap see residents return to their home provinces, creating a reverse migration that empties the capital. The festival coincides with the harvest season for rice farmers in the Cambodian lowlands. Businesses close for the duration, and government offices suspend operations. The three days are named Moha Songkran, Virak Wanabat, and Virak Loeurng Sak, each with specific religious significance and prescribed activities.
The Royal Ploughing Ceremony, called Pithi Chrat Preah Nengkal in Khmer, takes place annually in May at the ceremonial grounds near the National Museum in Phnom Penh. King Norodom Sihamoni presides over this agricultural ritual that dates to the Angkorian period. The ceremony involves sacred oxen plowing a designated field while royal officials scatter rice seeds. After completing the plowing, attendants place seven golden trays before the oxen containing rice, corn, beans, sesame seeds, fresh grass, water, and rice wine. Observers interpret which items the oxen consume as predictions for the coming agricultural season. If the oxen drink water, observers expect adequate rainfall. If they consume grain, the prediction indicates abundant harvests. The ceremony determines the official start of the rice planting season across Cambodia. The Minister of Agriculture and other government officials attend in ceremonial dress. Farmers from provinces throughout the country travel to Phnom Penh to collect blessed soil from the plowed field, which they take home to scatter on their own land.
Bon Om Touk, the Water Festival, occurs annually in November during the full moon of the Buddhist month of Kadeuk. The festival celebrates the reversal of the Tonle Sap River's flow, when waters that have flooded northward into Tonle Sap Lake during the monsoon season reverse direction and flow south into the Mekong River. This hydrological phenomenon occurs nowhere else on earth with such dramatic effect. Racing boats called tuk ngor gather on the Sisowath Quay in Phnom Penh, with teams representing provinces throughout Cambodia. Each boat measures approximately 25 meters in length and carries crews of 40 to 80 rowers. The races continue for three days, with morning and afternoon heats. The royal family watches from a pavilion along the riverfront. Evening illuminated boat processions feature vessels decorated with electric lights and traditional lanterns shaped like mythological creatures from the Reamker, the Khmer version of the Ramayana. Approximately two million people converge on Phnom Penh for the festival, creating the largest annual gathering in Cambodia. In 2010, a crowd crush on Diamond Island Bridge killed 347 people, leading to suspension of the festival until 2013.
Pchum Ben, also written as P'chum Ben, spans fifteen days during the tenth month of the Khmer lunar calendar, typically falling in September or October. The final three days constitute the main observance when government offices close and businesses suspend operations. Cambodians believe the gates of hell open during this period, releasing spirits of deceased relatives who roam the earth seeking food offerings from living descendants. Families visit pagodas before dawn, as monks believe spirits can only receive offerings in early morning hours. People typically rotate among seven different temples during the fifteen-day period, ensuring ancestors receive prayers even if the family cannot identify which temple holds spiritual significance for particular deceased relatives. Bay ben, sticky rice balls mixed with sesame seeds and coconut, serve as the primary food offering placed at temple altars. Families without descendants to make offerings wander as hungry ghosts according to Buddhist belief, so worshippers make extra donations to provide for these unclaimed spirits. In Phnom Penh, city residents travel to their ancestral home provinces, reducing the capital's population significantly during the observance. The festival has no direct equivalent in other Theravada Buddhist countries.
Independence Day commemorates Cambodia's independence from French colonial rule, achieved on November 9, 1953, under King Norodom Sihanouk's negotiation with the French government. The Independence Monument in Phnom Penh serves as the focal point for official celebrations. The monument, designed by Cambodian architect Vann Molyvann and completed in 1958, stands 37 meters tall and incorporates the lotus-shaped design of Angkorian temple towers. The official ceremony begins at the monument before dawn, with the King or Prime Minister lighting candles in the monument's interior chamber. Military parades proceed along Sihanouk Boulevard with units from the Royal Cambodian Armed Forces. Fireworks launch from locations along the Tonle Sap and Mekong rivers in Phnom Penh after dark. Government buildings display the Cambodian flag and illuminated decorations for one week surrounding the holiday. Provincial capitals conduct smaller parallel ceremonies at local monuments. The date marks the end of the French Protectorate that began in 1863 when King Norodom signed the treaty establishing French control.
The King's Birthday celebration honors King Norodom Sihamoni, who was born on May 14, 1953. The holiday became an official observance after Sihamoni's coronation on October 29, 2004, following his father King Norodom Sihanouk's abdication. Official ceremonies occur at the Royal Palace in Phnom Penh, where the King receives well-wishes from Prime Minister Hun Sen and members of the Council of Ministers. Buddhist monks conduct prayer ceremonies at pagodas throughout Cambodia. The Royal Palace opens its gardens to public viewing, an unusual occurrence given the palace's typical restricted access. Buildings throughout Phnom Penh and provincial capitals display portraits of King Sihamoni alongside the national flag. The celebration includes merit-making activities where citizens donate to temples and release captive birds or fish to earn religious merit on the King's behalf. Government offices and banks close for the holiday. The date also coincides with annual Royal Ploughing Ceremony preparations, creating an extended period of official observances in mid-May.
The Angkor Wat International Half Marathon takes place annually in December, typically on the first Sunday of the month. The race begins at Angkor Wat's western causeway at dawn, with courses routing through the Angkor Archaeological Park. Participants can choose from half marathon, ten-kilometer, five-kilometer, and three-kilometer distances. Approximately 10,000 runners from more than 60 countries register for the event, which began in 1996 as a small local race. The Japanese organization Hearts of Gold established the race to raise funds for prosthetic limb programs serving landmine victims in Cambodia. Runners pass Ta Prohm, Angkor Thom, and Bayon Temple during the half marathon course. Start times begin at 6:00 AM to avoid midday heat that routinely exceeds 30 degrees Celsius in December. The Apsara Authority, which manages the Angkor Archaeological Park, closes specific temple grounds to tourists during race hours. Winners in the full half marathon distance typically finish in times between 1 hour 10 minutes and 1 hour 15 minutes for men, with women's winners finishing around 1 hour 25 minutes. Prize money totals approximately $10,000 distributed among top finishers.