December 1977 Holidays
| Holidays December, 1977 | Week Day | Date |
| Pearl Harbor Day | Wednesday | December 7, 1977 |
| Feast of the Immaculate Conception | Thursday | December 8, 1977 |
| Christmas Eve | Saturday | December 24, 1977 |
| Christmas Day | Sunday | December 25, 1977 |
| Christmas Day (Observed) | Monday | December 26, 1977 |
| New Year's Eve | Saturday | December 31, 1977 |