December 1990 Holidays
| Holidays December, 1990 | Week Day | Date |
| Pearl Harbor Day | Friday | December 7, 1990 |
| Feast of the Immaculate Conception | Saturday | December 8, 1990 |
| Christmas Eve | Monday | December 24, 1990 |
| Christmas Day | Tuesday | December 25, 1990 |
| New Year's Eve | Monday | December 31, 1990 |