The field notes
About
December 5 is the birthday of the late King Bhumibol (Rama IX), Thailand's National Day and Father's Day. The nation is decked in yellow, with candle ceremonies and merit-making in his honour.
Highlights
- National Day, Father's Day and the late King Rama IX's birthday
- Cities decorated and lit in yellow (the king's colour)
- Candle-lighting ceremonies and merit-making nationwide
Plan it well
- Banks and government offices close; the day is patriotic and family-oriented
- Sanam Luang in Bangkok hosts large ceremonies and light displays
- Canola/yellow attire is customary at official events
Sources
Direct links checked for this research snapshot. The organiser or public authority remains authoritative for late changes.