| Dec 1 | First Sunday of Advent | | Dec 1 | World AIDS Day | | Dec 2 | Chanukah/Hanukkah (first day) | | Dec 2 | World Day for Slavery Abolition | | Dec 5 | International Volunteer Day | | Dec 7 | Pearl Harbor Remembrance Day | | Dec 9 | Feast of the Immaculate Conception | | Dec 9 | Last Day of Chanukah | | Dec 10 | Human Rights Day |
| | | | Dec 12 | Feast of Our Lady of Guadalupe | | Dec 15 | Bill of Rights Day | | Dec 17 | Pan American Aviation Day | | Dec 17 | Wright Brothers Day | | Dec 22 | December Solstice | | Dec 24 | Christmas Eve | | Dec 25 | Christmas Day (All) | | Dec 25 | Christmas Day | | Dec 31 | New Year's Eve |
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