About this Holiday
December 5th commemorates the birthday of His Majesty King Bhumibol Adulyadej (born December 5, 1927) and is designated as both Thailand's National Day and National Father's Day. King Bhumibol, the ninth monarch of the Chakri Dynasty, reigned for 70 years and is revered as a father figure of the nation for his dedication to his people and countless royal development projects. On this day, Thais wear yellow (the King's color), gather for candlelit ceremonies, participate in merit-making activities, and express gratitude to their own fathers.