On which date does Father’s Day usually fall in Thailand?

Thailand’s Father’s Day has traditionally been celebrated on December 5.

The date was associated with King Bhumibol Adulyadej, whose birthday was December 5. During his reign, the day served both as a national celebration honoring the king and as an occasion for people to honor their fathers and father figures.

Thai Father’s Day customs have included wearing yellow, a color associated with the king’s Monday birth, and giving canna flowers, which are linked with masculinity and paternal respect in Thai tradition. These customs make Thailand’s observance distinct from the June Sunday pattern common in many Western countries.

After King Bhumibol’s death in 2016, December 5 remained a significant national date, including as a public holiday connected with his birthday and national observances. The date is therefore best understood through Thailand’s royal and civic history.