| Sunday, January 1, 2023 | New Year's Day |
| Sunday, January 15, 2023 | Tamil Thai Pongal Day |
| Saturday, February 4, 2023 | National Day |
| Tuesday, March 7, 2023 | Madin Full Moon Poya Day |
| Friday, April 7, 2023 | Good Friday |
| Thursday, April 13, 2023 - Friday, April 14, 2023 | Sinhala Tamil New Year Holiday |
| Saturday, April 22, 2023 | Id-Ul-Fitr (Ramazan Festival) |
| Friday, May 5, 2023 - Saturday, May 6, 2023 | Vesak Full Moon Poya Day |
| Saturday, June 3, 2023 | Poson Full Moon Poya Day |
| Tuesday, August 1, 2023 | Nikini Full Moon Poya Day |
| Thursday, September 28, 2023 | Binara Full Moon Poya Day |
| Sunday, November 12, 2023 | Deepvali Festival Day |
| Sunday, November 26, 2023 | Ill Full Moon Poya Day |
| Monday, December 25, 2023 | Christmas Day |
| Tuesday, December 26, 2023 | Unduvap Full Moon Poya Day |
