SRI LANKA
Buddhism in Sri Lanka

Public Holidays

2007 Holiday Name
Jan 1 New Year's Day
Jan 15 Tamil Thai Pongal Day
Feb 1 Navam Full Moon Poya Day
Feb 4 National Day
Feb 16 Maha Sivarathri Day
Mar 3 Medin Full Moon Poya Day
Apr 1 Milad un-Nabi (Birth of the Prophet)
Apr 2 Bak Full Moon Poya Day
Apr 6 Good Friday
Apr 13-14 Sinhala and Tamil New Year
May 1 May Day
May 1-2 Vesak Full Moon Poya Days
May 31 Adi Poson Full Moon Poya Day
Jun 30 Poson Full Moon Poya Day
Jul 29 Esala Full Moon Poya Day
Aug 28 Nikini Full Moon Poya Day
Sep 26 Binara Full Moon Poya Day
Oct 13 Eid al-Fitr (End of Ramadan)
Oct 25 Vap Full Moon Poya Day
Nov 8 Deepavali
Nov 24 Il Full Moon Poya Day
Dec 21 Eid al-Adha (Hadji Festival Day)
Dec 23 Unduvap Full Moon Poya Day
Dec 25 Christmas Day

Notes

(a) Poya holidays are observed on the day of each full moon. In general, Hindu and Buddhist festivals are declared according to local astronomical observations and it is often only possible to forecast the approximate time of their occurrence. 

(b) Some public holidays are followed by an additional holiday for banks only. 

(c) Muslim festivals are timed according to local sightings of various phases of the moon and the dates given above are approximations. During the lunar month of Ramadan that precedes Eid al-Fitr, Muslims fast during the day and feast at night and normal business patterns may be interrupted; however, since Sri Lanka is not a predominantly Muslim country restrictions (which travellers may experience elsewhere) are unlikely to cause problems.


Source