When is King’s Birthday?
In 2026, King’s Birthday falls on Thursday, May 14, 2026. It is classified here as a Cambodian public holiday.
History of King’s Birthday
The birthday of King Norodom Sihamoni is a national public holiday, reflecting the monarchy’s continuing constitutional and cultural place in Cambodia. The King, who acceded to the throne in 2004, is widely associated with the arts and cultural life as well as his constitutional role.
Official messages, flag displays and public programmes may mark the occasion, while many people use the holiday for family time. The tone is respectful rather than commercial, and details of ceremonies are announced by public institutions and local authorities.
Norodom Sihamoni was born on May 14, 1953 and was selected as king by the Throne Council after King Norodom Sihanouk’s abdication in 2004. Cambodia is a constitutional monarchy, so the King’s formal role is defined by the 1993 Constitution and should not be described as executive government. The one-day 2026 paid holiday honours his birthday; it is separate from October’s Coronation Day and does not imply that every business stages a royal ceremony.
How King’s Birthday is observed
A paid public holiday on May 14 for King Norodom Sihamoni’s birthday; official ceremonies and private business hours vary.
Traditions of King’s Birthday
Royal messages
State institutions publish respectful greetings and accounts of King Norodom Sihamoni’s constitutional role, cultural interests and public activities.
Flags and portraits
Public buildings and streets may display Cambodian flags, royal portraits or ceremonial decoration according to official and municipal arrangements.
Quiet family holiday
Many households experience May 14 principally as paid time together rather than attending a single nationwide public celebration.
Dates and observance rules are checked against the official Cambodian official and legal guidance. Lunar dates and annual government, provincial or employer schedules should be confirmed against official notices.
History sources: Office of the Council of Ministers, Cambodia: 2026 public-holiday calendar, National Bank of Cambodia: Public Holidays 2026, Cambodia Ministry of Tourism: Public holidays and festival guide, Ministry of Economy and Finance: 2026 public-holiday calendar, Ministry of Labour and Vocational Training: Labour Law, KPMG Cambodia: 2021 Labour Law amendment and revised Article 162.
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