Day Date Month Holiday Friday 15 Jan Tamil Thai Pongal Day Saturday 23 Jan Duruthu Full Moon Poya Day Thursday 04 Feb National Day Monday 22 Feb Navam Full Moon Poya Day Monday 07 Mar Mahasivarathri Day Tuesday 22 Mar Madin Full Moon Poya Day Friday 25 Mar Good Friday Wednesday 13 Apr Sinhala and Tamil New Year's Eve Thursday 14 Apr Sinhala and Tamil New Year's Day Thursday 21 Apr Bak Full Moon Poya Day Sunday 01 May Labour Day Saturday 21 May Vesak Full Moon Poya Day Sunday 22 May Day after Vesak Full Moon Poya Day Sunday 19 Jun Poson Full Moon Poya Day Thursday 07 Jul Eid-al-Fitr (End of Ramadan) Tuesday 19 Jul Adhi Esala Full Moon Poya Day Wednesday 17 Aug Nikini Full Moon Poya Day Tuesday 13 Sep Eid-al-Adha (Feast of Sacrifice) Friday 16 Sep Binara Full Moon Poya Day Saturday 15 Oct Vap Full Moon Poya Day Saturday 29 Oct Deepavali Monday 14 Nov Il Full Moon Poya Day Monday 12 Dec Milad-Un-Nabi (Holy Prophet's Birthday) Tuesday 13 Dec Unduvap Full Moon Poya Day Sunday 25 Dec Christmas Day Source: http://www.timeanddate.com/holidays/sri-lanka/2016