Day Date Month Holiday Friday 01 Jan New Year's Day Monday 22 Feb Makha Bucha Day Wednesday 06 Apr Praphutthayotfachulalok, The Great and The Chakri Day Wednesday 13 Apr Songkran Festival Thursday 14 Apr Songkran Festival Friday 15 Apr Songkran Festival Monday 02 May National Labour Day (Substitution) Thursday 05 May Coronation Day Friday 06 May Special Holiday Friday 20 May Wisakha Bucha Day Friday 01 Jul Mid Year's Closing Day Monday 18 Jul Special Holiday Tuesday 19 Jul Asarnha Bucha Day Friday 12 Aug H.M. The Queen's Birthday Monday 24 Oct King Chulalongkorn Memorial Day (Substitution) Monday 05 Dec H.M. the King's Birthday Monday 12 Dec Constitution Day (Substitution) Source: http://www.set.or.th/en/about/holidays/holidays_p1.html