December 2025 calendar
Holidays, religious days, the sky, sports, elections and more, with sources.
December 2025
133 events
| Date | Event | When | |||
|---|---|---|---|---|---|
| Dec 1Mon | World AIDS DayObservances · UN international days | – | annual | United Nations | 10 mo ago |
| 225th anniversary: French Revolutionary Wars: Austrian forces, led by Archduke John of Austria,...History · Anniversaries | – | annual | Wikipedia | 10 mo ago | |
| MongoDB earnings (Q3 FY2026)Economy · Earnings | MongoDB (MDB) | quarterly | Quarterly | 10 mo ago | |
| Dec 2Tue | AWS re:Invent 2025Data and AI · Conferences · to Dec 6 · Las Vegas, NV | Las Vegas, NV; AWS | annual | AWS | 10 mo ago |
| 75th anniversary: Korean War: UN forces began a retreat from North Korea following defeat at the...History · Anniversaries | – | annual | Wikipedia | 10 mo ago | |
| International Day for the Abolition of SlaveryObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| CrowdStrike earnings (Q3 FY2026)Economy · Earnings | CrowdStrike (CRWD) | quarterly | Quarterly | 10 mo ago | |
| Dec 3Wed | International Day of Persons with DisabilitiesObservances · UN international days | – | annual | United Nations | 10 mo ago |
| 225th anniversary: War of the Second Coalition: French forces defeated Austrian and Bavarian...History · Anniversaries | – | annual | Wikipedia | 10 mo ago | |
| Salesforce earnings (Q3 FY2026)Economy · Earnings | Salesforce (CRM) | quarterly | Quarterly | 10 mo ago | |
| Snowflake earnings (Q3 FY2026)Economy · Earnings | Snowflake (SNOW) | quarterly | Quarterly | 10 mo ago | |
| Dec 4Thu | Full moon: Cold Moon (supermoon)Sky · Moon phases · 5:14 pm CT | – | monthly | NASAComputed (rule) | 10 mo ago |
| Rainer Maria Rilke, born 1875 (150 years)People · Birth anniversaries | – | annual | Wikipedia | 10 mo ago | |
| International Day Against Unilateral Coercive MeasuresObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| International Day of BanksObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| Dec 5Fri | 250th anniversary: American Revolutionary War: Continental Army colonel Henry Knox arrived at Fort...History · Anniversaries | – | annual | Wikipedia | 10 mo ago |
| International Volunteer Day for Economic and Social DevelopmentObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| World Soil DayObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| Dec 6Sat | MLS Cup 2025Sports · MLS | – | annual | Wikipedia | 10 mo ago |
| 50th anniversary: Four members of the Provisional Irish Republican Army took two people hostage...History · Anniversaries | – | annual | Wikipedia | 10 mo ago | |
| Constitution Day (Spain)Holidays · Spain · Spain | Spain | annual | Nager.Date | 10 mo ago | |
| Saint Nicholas DayReligion · Christianity | – | annual | USCCB liturgical yearComputed (rule) | 10 mo ago | |
| Dec 7Sun | F1 season finale 2025: Abu Dhabi Grand PrixSports · Formula 1 · Yas Marina Circuit | Yas Marina Circuit | annual | Wikipedia | 10 mo ago |
| 50th anniversary: The Indonesian military began a lengthy occupation of East Timor under the...History · Anniversaries | – | annual | Wikipedia | 10 mo ago | |
| Mercury at greatest western elongationSky · Planets | – | recurring | Astronomy EngineComputed (rule) | 10 mo ago | |
| International Civil Aviation DayObservances · UN international days | – | annual | United Nations | 10 mo ago | |
| Dec 8Mon | Immaculate Conception (Italy)Holidays · Italy · Italy | Italy | annual | Nager.Date | 10 mo ago |
| Immaculate Conception (Spain)Holidays · Spain · Spain | Spain | annual | Nager.Date | 10 mo ago | |
| Immaculate Conception Day (Argentina)Holidays · Argentina · Argentina | Argentina | annual | Nager.Date | 10 mo ago | |
| Bodhi DayReligion · Buddhism | – | annual | WikipediaComputed (rule) | 10 mo ago | |
| Feast of the Immaculate ConceptionReligion · Christianity | – | annual | USCCB liturgical yearComputed (rule) | 10 mo ago | |
| Dec 9Tue | FOMC meetingEconomy · Federal Reserve · 1:00 pm ET · to Dec 10 · Federal Reserve, Washington | Federal Reserve, Washington | eight times a year | Federal Reserve | 9 mo ago |
| 250th anniversary: American Revolutionary War: After their loss in the Battle of Great Bridge,...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| International Anti-Corruption DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| International Day of Commemoration and Dignity of the Victims of the Crime of Genocide and of the Prevention of this CrimeObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 10Wed | Human Rights DayObservances · UN international days | – | annual | United Nations | 9 mo ago |
| Nobel Prize award ceremonies 2025Academic · Nobel Prizes · Stockholm and Oslo | Stockholm and Oslo | annual | Nobel PrizeComputed (rule) | 9 mo ago | |
| NeurIPS 2025Data and AI · Conferences · to Dec 15 · San Diego, CA | San Diego, CA; NeurIPS Foundation | annual | NeurIPS Foundation | 9 mo ago | |
| Adobe earnings (Q4 FY2025)Economy · Earnings | Adobe (ADBE) | quarterly | Quarterly | 9 mo ago | |
| Oracle earnings (Q2 FY2026)Economy · Earnings | Oracle (ORCL) | quarterly | Quarterly | 9 mo ago | |
| Dec 11Thu | 100th anniversary: Pope Pius XI promulgated the encyclical Quas primas, establishing the Feast of...History · Anniversaries | – | annual | Wikipedia | 9 mo ago |
| Last quarter moonSky · Moon phases · 2:52 pm CT | – | monthly | NASAComputed (rule) | 9 mo ago | |
| Pope Leo X, born 1475 (550 years)People · Birth anniversaries | – | annual | Wikipedia | 9 mo ago | |
| Pranab Mukherjee, born 1935 (90 years)People · Birth anniversaries | – | annual | Wikipedia | 9 mo ago | |
| International Mountain DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Broadcom earnings (Q4 FY2025)Economy · Earnings | Broadcom (AVGO) | quarterly | Quarterly | 9 mo ago | |
| Dec 12Fri | Jamhuri Day (Kenya)Holidays · Kenya · Kenya | Kenya | annual | Nager.Date | 9 mo ago |
| 25th anniversary: The U.S. Supreme Court ruled in Bush v. Gore that the recount of ballots cast...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| International Day of NeutralityObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| International Universal Health Coverage DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 14Sun | HanukkahReligion · Judaism · to Dec 22 | – | annual | HebcalComputed (rule) | 9 mo ago |
| Geminids meteor shower peakSky · Meteor showers | – | annual | International Meteor OrganizationComputed (rule) | 9 mo ago | |
| 100th anniversary: Wozzeck (poster pictured) by composer Alban Berg, described as the first atonal...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| 375th anniversary: English domestic servant Anne Greene survived being hanged for infanticideHistory · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| International Day against Colonialism in All its Forms and ManifestationsObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 15Mon | 1000th anniversary: Constantine VIII (depicted) became the sole Byzantine emperor, 63 years after...History · Anniversaries | – | annual | Wikipedia | 9 mo ago |
| World Turkic Language Family DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 16Tue | Jane Austen, born 1775 (250 years)People · Birth anniversaries | – | annual | Wikipedia | 9 mo ago |
| Day of Reconciliation (South Africa)Holidays · South Africa · South Africa | South Africa | annual | Nager.Date | 9 mo ago | |
| 175th anniversary: Settlers of the Canterbury Association aboard Randolph and Charlotte Jane...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| Dec 17Wed | Milla Jovovich, born 1975 (50 years)People · Birth anniversaries | – | annual | Wikipedia | 9 mo ago |
| Micron earnings (Q1 FY2026)Economy · Earnings | Micron (MU) | quarterly | Quarterly | 9 mo ago | |
| Dec 18Thu | Sia, born 1975 (50 years)People · Birth anniversaries | – | annual | Wikipedia | 9 mo ago |
| Arabic Language DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| International Migrants DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 19Fri | New moonSky · Moon phases · 7:44 pm CT | – | monthly | NASAComputed (rule) | 9 mo ago |
| International Day of Recognition for Women Searchers of Missing PersonsObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 20Sat | International Human Solidarity DayObservances · UN international days | – | annual | United Nations | 9 mo ago |
| Dec 21Sun | December solsticeSky · Solstices and equinoxes · 9:03 am CT | – | annual | US Naval ObservatoryComputed (rule) | 9 mo ago |
| YuleReligion · Pagan and Wiccan | – | annual | Wheel of the YearComputed (rule) | 9 mo ago | |
| 2025 Africa Cup of NationsSports · Soccer · to Jan 18 · Morocco | Morocco | annual | Wikipedia | 9 mo ago | |
| World Basketball DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| World Meditation DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 22Mon | Ursids meteor shower peakSky · Meteor showers | – | annual | International Meteor OrganizationComputed (rule) | 9 mo ago |
| Dec 24Wed | Christmas EveReligion · Christianity | – | annual | USCCB liturgical yearComputed (rule) | 9 mo ago |
| 100th anniversary: Winnie-the-Pooh first appeared by name in a children's story in the London...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| Christmas Eve (Poland)Holidays · Poland · Poland | Poland | annual | Nager.Date | 9 mo ago | |
| Christmas Eve (Sweden)Holidays · Sweden · Sweden | Sweden | annual | Nager.Date | 9 mo ago | |
| International Anti-Cybercrime DayObservances · UN international days | – | annual | United Nations | 9 mo ago | |
| Dec 25Thu | Christmas DayHolidays · United States · United States | United States | annual | Nager.Date | 9 mo ago |
| Christmas: the Nativity of JesusReligion · Christianity | – | annual | USCCB liturgical yearComputed (rule) | 9 mo ago | |
| 300th anniversary: J. S. Bach led the first performance of the Christmas cantata Unser Mund sei...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| 925th anniversary: Baldwin I was crowned the first king of Jerusalem (depicted) in the Church of...History · Anniversaries | – | annual | Wikipedia | 9 mo ago | |
| Christmas Day (Argentina)Holidays · Argentina · Argentina | Argentina | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Australia)Holidays · Australia · Australia | Australia | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Brazil)Holidays · Brazil · Brazil | Brazil | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Canada)Holidays · Canada · Canada | Canada | annual | Nager.Date | 9 mo ago | |
| Christmas Day (France)Holidays · France · France | France | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Germany)Holidays · Germany · Germany | Germany | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Ireland)Holidays · Ireland · Ireland | Ireland | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Italy)Holidays · Italy · Italy | Italy | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Kenya)Holidays · Kenya · Kenya | Kenya | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Mexico)Holidays · Mexico · Mexico | Mexico | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Netherlands)Holidays · Netherlands · Netherlands | Netherlands | annual | Nager.Date | 9 mo ago | |
| Christmas Day (New Zealand)Holidays · New Zealand · New Zealand | New Zealand | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Nigeria)Holidays · Nigeria · Nigeria | Nigeria | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Norway)Holidays · Norway · Norway | Norway | annual | Nager.Date | 9 mo ago | |
| Christmas Day (Poland)Holidays · Poland · Poland | Poland | annual | Nager.Date | 9 mo ago | |
| Christmas Day (South Africa)Holidays · South Africa · South Africa | South Africa | annual | Nager.Date | 9 mo ago | |
| Christmas Day (South Korea)Holidays · South Korea · South Korea | South Korea | annual | Nager.Date | 9 mo ago |
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.