Day Date Month Holiday Monday 2 Jan Substitution for New Year's Eve and New Year's Day (Saturday 31st December 2016 and Sunday 1st January 2017) Tuesday 3 Jan Special Holiday Monday 13 Feb Substitution for Makha Bucha Day (Saturday 11th February 2017) Thursday 6 Apr Chakri Memorial Day Thursday 13 Apr Songkran Festival Friday 14 Apr Songkran Festival Monday 1 May National Labour Day Wednesday 10 May Wisakha Bucha Day Monday 10 Jul Substitution for Asarnha Bucha Day (Saturday 8th July 2017) Friday 28 Jul H.M. the King's Birthday Monday 14 Aug Substitution for H.M. the Queen's Birthday (Saturday 12th August 2017) Friday 13 Oct The Passing of H.M. the Late King Bhumibol Adulyadej (Rama IX) Monday 23 Oct Chulalongkorn Day Thursday 26 Oct The Royal Cremation for H.M. the Late King Bhumibol Adulyadej Tuesday 5 Dec H.M. the Late King Bhumibol Adulyadej's Birthday, National Day and National Father’s Day Monday 11 Dec Substitution for Constitution Day (Sunday 10th December 2017) Source: www.set.or.th/set/holiday.do?year=2017