5 Dec 2026 - 5 Dec 2026
National Day and Father’s Day 2026
Thailand’s National Day and Father’s Day are observed annually on 5 December, marking the birthday anniversary of His Majesty King Bhumibol Adulyadej the Great, Bhumibol Adulyadej Borommanathbophit.
He is deeply beloved by the Thai people and is regarded as an exemplary Father of the Nation, whose dedication and virtue continue to inspire generations.