Day Date Month Holiday
Monday 1 Jan New Year's Day
Tuesday 2 Jan Substitution for New Year's Eve (Sunday 31st December 2017)
Thursday 1 Mar Makha Bucha Day
Friday 6 Apr Chakri Memorial Day
Friday 13 Apr Songkran Festival
Monday 16 Apr Songkran Festival
Tuesday 1 May National Labour Day
Tuesday 29 May Wisakha Bucha Day
Friday 27 Jul Asarnha Bucha Day
Monday 30 Jul Substitution for H.M. the King's Birthday (Saturday 28th July 2018)
Monday 13 Aug Substitution for H.M. Queen Sirikit’s Birthday (Sunday 12th August 2018)
Monday 15 Oct Substitution for the Passing of H.M. King Bhumibol Adulyadej (Saturday 13th October 2018)
Tuesday 23 Oct Chulalongkorn Day
Wednesday 5 Dec H.M. the King Bhumibol Adulyadej's Birthday,
National Day and National Father's Day
Monday 10 Dec Constitution Day
Monday 31 Dec New Year's Eve
Source: www.bot.or.th