Day Date Month Holiday Wednesday 1 Jan New Year's Day Monday 10 Feb Substitution for Makha Bucha Day (Saturday 8th Febuary 2020) Monday 6 Apr Chakri Memorial Day Friday 1 May National Labour Day Monday 4 May Coronation Day Wednesday 6 May Wisakha Bucha Day Wednesday 3 Jun H.M. Queen Suthida’s Birthday Monday 6 Jul Substitution for Asarnha Bucha Day (Saturday 4th July 2020) Tuesday 28 Jul H.M. the King's Birthday Wednesday 12 Aug H.M. Queen Sirikit’s Birthday Tuesday 13 Oct The Passing of H.M. King Bhumibol Adulyadej Friday 23 Oct Chulalongkorn Day Monday 7 Dec Substitution for H.M. the King Bhumibol Adulyadej's Birthday,
National Day and National Father's Day (Saturday 5th December 2020)
Thursday 10 Dec Constitution Day Thursday 31 Dec New Year's Eve Source: The Stock Exchange of Thailand