Day Date Month Holiday Wednesday 1 Jan New Year's Day Wednesday 12 Feb Makha Bucha Day Monday 7 Apr Substitution for Chakri Memorial Day (Sunday 6 April 2025) Monday 14 Apr Songkran Festival Tuesday 15 Apr Songkran Festival Thursday 1 May National Labour Day Monday 5 May Substitution for Coronation Day (Sunday 4 May 2025) Monday 12 May Substitution for Visakha Bucha Day (Sunday 11 May 2025) Tuesday 3 Jun H.M. Queen Suthida Bajrasudhabimalalakshana's Birthday Thursday 10 Jul Asarnha Bucha Day Monday 28 Jul H.M. King Maha Vajiralongkorn Phra Vajiraklaochaoyuhua's Birthday Tuesday 12 Aug H.M. Queen Sirikit The Queen Mother's Birthday / Mother's Day Monday 13 Oct H.M. King Bhumibol Adulyadej The Great Memorial Day Thursday 23 Oct H.M. King Chulalongkorn The Great Memorial Day Friday 5 Dec H.M. King Bhumibol Adulyadej The Great's Birthday / National Day / Father's Day Wednesday 10 Dec Constitution Day Wednesday 31 Dec New Year's Eve Note: The change of SET holidays is in line with the announcement of the Bank of Thailand (BOT) and the Securities Exchange Commission (SEC). Source: The Stock Exchange of Thailand