December 1999 Holidays
| Holidays December, 1999 | Week Day | Date |
| Pearl Harbor Day | Tuesday | December 7, 1999 |
| Feast of the Immaculate Conception | Wednesday | December 8, 1999 |
| Christmas Day (Observed) | Friday | December 24, 1999 |
| Christmas Eve | Friday | December 24, 1999 |
| Christmas Day | Saturday | December 25, 1999 |
| New Year's Eve | Friday | December 31, 1999 |