December 1978 Holidays
| Holidays December, 1978 | Week Day | Date |
| Pearl Harbor Day | Thursday | December 7, 1978 |
| Feast of the Immaculate Conception | Friday | December 8, 1978 |
| Christmas Eve | Sunday | December 24, 1978 |
| Christmas Day | Monday | December 25, 1978 |
| New Year's Eve | Sunday | December 31, 1978 |