| Dec 6 | Tuesday | St. Nicholas Day | Belgium |
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| | Saint Nicholas Day | Germany, Hungary |
| | Foundation of Quito | Ecuador |
| | Constitution Day Holiday | Spain |
| | Independence Day | Finland |
| | Army Day | Ukraine |
| Dec 7 | Wednesday | Spitak Remembrance Day | Armenia |
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| | Eve of the Feast of the Immaculate Conception | Colombia |
| | The Feast of St. Ambrose (Milan) | Italy |
| | Unduvap Full Moon Poya Day | Sri Lanka |
| | Western Province Day | Solomon Islands |
| | Day of Remembrance | East Timor |
| Dec 8 | Thursday | Feast of the Immaculate Conception | Andorra, Argentina, Austria, Australia, Canada, Switzerland, Chile, Colombia, Costa Rica, Germany, Spain, Equatorial Guinea, Italy, Liechtenstein, Monaco, Macau, Malta, Nicaragua, Peru, Philippines, Portugal, Seychelles, San Marino, United Kingdom, United States, Vatican City (Holy See), Venezuela |
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| | National Youth Day | Albania |
| | Battle Day | Falkland Islands |
| | Santa Marian Kamalen Day | Guam |
| | Saint Kliment Ohridski's Day | North Macedonia |
| | Constitution Day | Northern Mariana Islands, Romania, Uzbekistan |
| | Udhauli Parva | Nepal |
| | Mother's Day | Panama |
| | Virgin of Caacupé Day | Paraguay |
| | Day of Our Lady of Immaculate Conception | East Timor |
| Dec 9 | Friday | V.C. Bird Day | Antigua and Barbuda |
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| | Genocide Condemnation and Prevention Day | Armenia |
| | Bridge Public Holiday | Argentina |
| | Day of Saint Leocadia | Spain |
| | Battle of Ayacucho | Peru |
| | Independence Day | Tanzania |
| Dec 10 | Saturday | Human Rights Day | Equatorial Guinea, Mongolia |
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| | Anniversary of Victory over ISIS | Iraq |
| | International Human Rights Day | Moldova, Turks and Caicos Islands |
| | Day of the Namibian Women and International Human Rights Day | Namibia |
| | Constitution Day | Thailand |
| Dec 11 | Sunday | Proclamation of Independence Day | Burkina Faso |
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| | Anniversary of the Statute of Westminster | Canada |
| | Third Advent Sunday | Germany, Norway, Sweden |
| | Human Rights and Peace Day | Kiribati |
| | Birthday of the Sultan of Selangor | Malaysia |
| Dec 12 | Monday | Day off for Proclamation of Independence Day | Burkina Faso |
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| | Jamhuri Day | Kenya |
| | Day off for Human Rights and Peace Day | Kiribati |
| | Day of the Virgin of Guadalupe | Mexico |
| | Day off for Birthday of the Sultan of Selangor | Malaysia |
| | Day off for Constitution Day | Thailand |
| | Day of Neutrality | Turkmenistan |
| | Feast of Our Lady of Guadalupe | United States |
| | Holiday for Feast of the Immaculate Conception | Venezuela |
| Dec 13 | Tuesday | National Day | Saint Lucia |
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| | Republic Day | Malta |
