1966 Holidays and Events in Sri Lanka
| Additional Information | Date | Name |
|---|---|---|
| 1/7/1966, Fri | Durutha Full Moon Poya Day | |
| 1/14/1966, Fri | Tamil Thai Pongal | |
| 1/24/1966, Mon | Ramazan Festival Day ( Id-Ul-Fitr) | |
| 2/4/1966, Fri | Independence Day/National Day | |
| 2/5/1966, Sat | Nawam Full Moon Poya Day | |
| 2/19/1966, Sat | Maha Sivarathri Day | |
| 3/7/1966, Mon | Medin Full Moon Poya Day | |
| 4/2/1966, Sat | Hadji Festival Day/ Id-Ul-Alha | |
| 4/5/1966, Tue | Bak Full Moon Poya Day | |
| 4/8/1966, Fri | Good Friday | |
| 4/13/1966, Wed | Sinhala and Tamil New Year's Eve | |
| 4/14/1966, Thu | Sinhala and Tamil New Year's Day | |
| 5/1/1966, Sun | May Day | |
| 5/2/1966, Mon | May Day: Additional Observance Day | |
| 5/5/1966, Thu | Vesak Full Moon Poya Day | |
| 5/6/1966, Fri | Vesak Full Moon Poya Day | |
| 6/3/1966, Fri | Poson Full Moon Poya Day | |
| 7/2/1966, Sat | Milad-Un-Nabi | |
| 7/3/1966, Sun | Esala Full Moon Poya Day | |
| 8/1/1966, Mon | Nikini Full Moon Poya Day | |
| 8/31/1966, Wed | Adhi Nikini Full Moon Poya Day | |
| 9/29/1966, Thu | Binara Full Moon Poya Day | |
| 10/29/1966, Sat | Vap Full Moon Poya Day | |
| 11/12/1966, Sat | Deepavali Festival | |
| 11/28/1966, Mon | Il Full Moon Poya Day | |
| 12/14/1966, Wed | Ramadan Begins | |
| 12/15/1966, Thu | Ramadan Begins | |
| 12/16/1966, Fri | Ramadan Begins | |
| 12/17/1966, Sat | Ramadan Begins | |
| 12/18/1966, Sun | Ramadan Begins | |
| 12/19/1966, Mon | Ramadan Begins | |
| 12/20/1966, Tue | Ramadan Begins | |
| 12/21/1966, Wed | Ramadan Begins | |
| 12/22/1966, Thu | Ramadan Begins | |
| 12/23/1966, Fri | Ramadan Begins | |
| 12/24/1966, Sat | Ramadan Begins | |
| 12/25/1966, Sun | Ramadan Begins | |
| 12/25/1966, Sun | Christmas Day | |
| 12/26/1966, Mon | Ramadan Begins | |
| 12/26/1966, Mon | Christmas Day: Additional Observance Day | |
| 12/27/1966, Tue | Ramadan Begins | |
| 12/27/1966, Tue | Unduvap Full Moon Poya Day/Sanga Mitta Day | |
| 12/28/1966, Wed | Ramadan Begins | |
| 12/29/1966, Thu | Ramadan Begins | |
| 12/30/1966, Fri | Ramadan Begins | |
| 12/31/1966, Sat | Ramadan Begins | |
| 1/1/1967, Sun | Ramadan Begins | |
| 1/2/1967, Mon | Ramadan Begins | |
| 1/3/1967, Tue | Ramadan Begins | |
| 1/4/1967, Wed | Ramadan Begins | |
| 1/5/1967, Thu | Ramadan Begins | |
| 1/6/1967, Fri | Ramadan Begins | |
| 1/7/1967, Sat | Ramadan Begins | |
| 1/8/1967, Sun | Ramadan Begins | |
| 1/9/1967, Mon | Ramadan Begins | |
| 1/10/1967, Tue | Ramadan Begins | |
| 1/11/1967, Wed | Ramadan Begins | |
| 1/12/1967, Thu | Ramadan Begins |