December 2025 calendar
December 2025
PastJanuary
2025 Africa Cup of NationsMoroccoAfrica's championship.WikipediaDetails →Christmas seasonFrom Christmas Day to the Baptism of the Lord.USCCB liturgical year, computedDetails →Nativity Fast (Julian calendar)The forty-day fast before Christmas, November 15 to December 24 Julian.Orthodox Church in America, computedDetails →Gahambar Maidyarem (midwinter)The fifth Gahambar, across the new year, in the Fasli calendar.avesta.org Zoroastrian calendars, computedDetails →2025-26 Tour de SkiToblach and Val di FiemmeCross-country skiing stage race over the new year.WikipediaDetails →
PastDecember 2025
250th anniversary: American Revolutionary War: At the Battle of Quebec, British forces repulsed an...In 1775, American Revolutionary War: At the Battle of Quebec, British forces repulsed an attempt by the Continental Army to capture Quebec City and enlist...WikipediaDetails →New Year’s EveThe last day of the year.Wikipedia, computedDetails →Delaware Personal Data Privacy Act (DPDPA): Mandatory 60-day cure period expiresDelawareMandatory notice-and-cure ends Dec 31, 2025; from Jan 1, 2026 DOJ decides whether to offer a cure using statutory factors.RegulationsDetails →Last Day of The Year (Philippines)PhilippinesA public holiday in the Philippines, known locally as Huling Araw ng Taon.Nager.DateDetails →New Year's Eve (Iceland)IcelandA public holiday in Iceland, known locally as Gamlársdagur.Nager.DateDetails →Toshikoshi no Oharae (Year-end Great Purification)The year-end purification on New Year’s Eve (Omisoka).Association of Shinto Shrines (Jinja Honcho), computedDetails →75th anniversary: Korean War: North Korean troops attacked United Nations forces in the first of...In 1950, Korean War: North Korean troops attacked United Nations forces in the first of two battles at Wonju.WikipediaDetails →Groq retires playai-ttsGroqGroq API ends support for this model; the replacement is canopylabs/orpheus-v1-english.GroqDetails →Groq retires playai-tts-arabicGroqGroq API ends support for this model; the replacement is canopylabs/orpheus-arabic-saudi.GroqDetails →Microsoft retires Azure AI Health Insights and related modelsMicrosoftAzure ends support for this model.MicrosoftDetails →Mistral AI retires Ministral 3B (24.1)Mistral AIMistral API ends support for this model; the replacement is Ministral 3 3B.Mistral AIDetails →Mistral AI retires Ministral 8B (24.1)Mistral AIMistral API ends support for this model; the replacement is Ministral 3 8B.Mistral AIDetails →Mistral AI retires OCR (25.03)Mistral AIMistral API ends support for this model; the replacement is OCR 4.1.Mistral AIDetails →Mistral AI retires Pixtral 12B (24.09)Mistral AIMistral API ends support for this model; the replacement is Ministral 3 14B.Mistral AIDetails →AWS Generative AI Accelerator 2025 demo dayAWS Generative AI AcceleratorAWS Generative AI Accelerator 2025 founders present to investors. Month only: the program names December 2025, not the day.AWS Generative AI AcceleratorDetails →Rizal Day (Philippines)PhilippinesA public holiday in the Philippines, known locally as Araw ng Kamatayan ni Dr. Jose Rizal.Nager.DateDetails →Asara B’TevetA minor fast marking the siege of Jerusalem. Observed from dawn to nightfall.Hebcal, computedDetails →25th anniversary: A series of bombings occurred around Metro Manila in the PhilippinesIn 2000, A series of bombings occurred around Metro Manila in the Philippines, killing 22 people and injuring around 100 others.WikipediaDetails →Tiger Woods, born 1975 (50 years)American golfer.WikipediaDetails →Your product data just got a job: Workflows is now outposthogWorkflows allows users to automate actions like sending emails or Slack alerts directly from PostHog event data. It eliminates the need for external syncing...posthogDetails →50th anniversary: Planted by unknown perpetrators, a bomb exploded (aftermath pictured) at...In 1975, Planted by unknown perpetrators, a bomb exploded (aftermath pictured) at LaGuardia Airport in New York City, killing 11 people and seriously injuring...WikipediaDetails →Annotations Rest API (v3) and additional improvementsamplitudeDescription: We added new REST API endpoints to manage annotation categories and access new annotation fields (like end date). HC Docs have been updated...amplitudeDetails →Container Images (release 251229)deepgramQuay.io/deepgram/self-hosted-api:release-251229 Equivalent image to: quay.io/deepgram/self-hosted-api:1.173.4...deepgramDetails →This Release Contains The Following ChangesdeepgramExpands Aura-2 TTS language support - Adds TTS support for Dutch, German, French, Italian, and Japanese. See the relevant changelog entry . Reach out to...deepgramDetails →100th anniversary: The Tokyo Grand Sumo Association became the All Japan Sumo Association at the...In 1925, The Tokyo Grand Sumo Association became the All Japan Sumo Association at the instigation of Prince-Regent Hirohito, laying the foundations for the...WikipediaDetails →Holy Family of Jesus, Mary and JosephThe Sunday within the octave of Christmas.USCCB liturgical year, computedDetails →Liu Xiaobo, born 1955 (70 years)Chinese author, academic, and activist, Nobel Prize laureate (died 2017).WikipediaDetails →Guru Gobind Singh GurpurabThe birth of Guru Gobind Singh, the tenth Guru, founder of the Khalsa. Pausha, Shukla 7. Regional dates can differ by a day.Wikipedia, computedDetails →First quarter moonThe Moon is half lit (waxing).NASA, computedDetails →Salman Khan, born 1965 (60 years)Indian film actor and producer.WikipediaDetails →International Day of Epidemic PreparednessA United Nations international day.United NationsDetails →Boxing Day (New Zealand)New ZealandA public holiday in New Zealand.Nager.DateDetails →Day of Goodwill (South Africa)South AfricaA public holiday in South Africa, officially St. Stephen's Day.Nager.DateDetails →St. Stephen's Day (United Kingdom)United KingdomA public holiday in the United Kingdom, officially Boxing Day.Nager.DateDetails →Zartosht No-Diso (Fasli)The death anniversary of Zarathustra, Dae 11, in the Fasli calendar.Wikipedia, computedDetails →200th anniversary: Imperial Russian Army officers led about 3,000 soldiers in protest against...In 1825, Imperial Russian Army officers led about 3,000 soldiers in protest against Nicholas I's assumption of the throne after his elder brother Konstantin...WikipediaDetails →225th anniversary: Philip Gidley King, Governor of New South Wales, ordered the formation of the...In 1800, Philip Gidley King, Governor of New South Wales, ordered the formation of the Governor's Body Guard of Light Horse, described as the first full-time...WikipediaDetails →Christmas DayUnited StatesA public holiday in the United States.Nager.DateDetails →Christmas: the Nativity of JesusThe Christian feast of the birth of Jesus. A holy day of obligation for Catholics.USCCB liturgical year, computedDetails →300th anniversary: J. S. Bach led the first performance of the Christmas cantata Unser Mund sei...In 1725, J. S. Bach led the first performance of the Christmas cantata Unser Mund sei voll Lachens, BWV 110, making laughter audible in singing.WikipediaDetails →925th anniversary: Baldwin I was crowned the first king of Jerusalem (depicted) in the Church of...In 1100, Baldwin I was crowned the first king of Jerusalem (depicted) in the Church of the Nativity in Bethlehem.WikipediaDetails →
| Date | Event | |||
|---|---|---|---|---|
| PastJanuary | ||||
| Dec 21Sun9 months ago | 2025 Africa Cup of NationsAfrica's championship.Sports · Soccer · to Jan 18 · Morocco · Wikipedia | Morocco | annual | Wikipedia |
| Dec 25Thu10 months ago | Christmas seasonFrom Christmas Day to the Baptism of the Lord.Religion · Catholic · to Jan 11 · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) |
| Nov 28Fri10 months ago | Nativity Fast (Julian calendar)The forty-day fast before Christmas, November 15 to December 24 Julian.Religion · Eastern Orthodox · to Jan 6 · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) |
| Dec 31Wed10 months ago | Gahambar Maidyarem (midwinter)The fifth Gahambar, across the new year, in the Fasli calendar.Religion · Zoroastrianism · to Jan 4 · avesta.org Zoroastrian calendars | – | annual | avesta.org Zoroastrian calendarsComputed (rule) |
| Dec 28Sun10 months ago | 2025-26 Tour de SkiCross-country skiing stage race over the new year.Sports · Other sports · to Jan 4 · Toblach and Val di Fiemme · Wikipedia | Toblach and Val di Fiemme | annual | Wikipedia |
| PastDecember 2025 | ||||
| Dec 31Wed10 months ago | 250th anniversary: American Revolutionary War: At the Battle of Quebec, British forces repulsed an...In 1775, American Revolutionary War: At the Battle of Quebec, British forces repulsed an attempt by the Continental Army to capture Quebec City and enlist...History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| New Year’s EveThe last day of the year.Observances · Days · Wikipedia | – | annual | WikipediaComputed (rule) | |
| Delaware Personal Data Privacy Act (DPDPA): Mandatory 60-day cure period expiresMandatory notice-and-cure ends Dec 31, 2025; from Jan 1, 2026 DOJ decides whether to offer a cure using statutory factors.Tech · Compliance deadlines · Delaware · Regulations | Delaware | one-off | Regulations | |
| Last Day of The Year (Philippines)A public holiday in the Philippines, known locally as Huling Araw ng Taon.Holidays · Philippines · Philippines · Nager.Date | Philippines | annual | Nager.Date | |
| New Year's Eve (Iceland)A public holiday in Iceland, known locally as Gamlársdagur.Holidays · Iceland · Iceland · Nager.Date | Iceland | annual | Nager.Date | |
| Toshikoshi no Oharae (Year-end Great Purification)The year-end purification on New Year’s Eve (Omisoka).Religion · Shinto · Association of Shinto Shrines (Jinja Honcho) | – | annual | Association of Shinto Shrines (Jinja Honcho)Computed (rule) | |
| 75th anniversary: Korean War: North Korean troops attacked United Nations forces in the first of...In 1950, Korean War: North Korean troops attacked United Nations forces in the first of two battles at Wonju.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Groq retires playai-ttsUnverifiedGroq API ends support for this model; the replacement is canopylabs/orpheus-v1-english.Tech · Retirements · Groq · Groq | Groq | one-off | Groq | |
| Groq retires playai-tts-arabicUnverifiedGroq API ends support for this model; the replacement is canopylabs/orpheus-arabic-saudi.Tech · Retirements · Groq · Groq | Groq | one-off | Groq | |
| Microsoft retires Azure AI Health Insights and related modelsUnverifiedAzure ends support for this model.Tech · Retirements · Microsoft · Microsoft | Microsoft | one-off | Microsoft | |
| Mistral AI retires Ministral 3B (24.1)UnverifiedMistral API ends support for this model; the replacement is Ministral 3 3B.Tech · Retirements · Mistral AI · Mistral AI | Mistral AI | one-off | Mistral AI | |
| Mistral AI retires Ministral 8B (24.1)UnverifiedMistral API ends support for this model; the replacement is Ministral 3 8B.Tech · Retirements · Mistral AI · Mistral AI | Mistral AI | one-off | Mistral AI | |
| Mistral AI retires OCR (25.03)UnverifiedMistral API ends support for this model; the replacement is OCR 4.1.Tech · Retirements · Mistral AI · Mistral AI | Mistral AI | one-off | Mistral AI | |
| Mistral AI retires Pixtral 12B (24.09)UnverifiedMistral API ends support for this model; the replacement is Ministral 3 14B.Tech · Retirements · Mistral AI · Mistral AI | Mistral AI | one-off | Mistral AI | |
| Dec 1Mon10 months ago | AWS Generative AI Accelerator 2025 demo dayTentativeAWS Generative AI Accelerator 2025 founders present to investors. Month only: the program names December 2025, not the day.Tech · Accelerators · to Dec 31 · AWS Generative AI Accelerator · AWS Generative AI Accelerator | AWS Generative AI Accelerator | annual | AWS Generative AI Accelerator |
| Dec 30Tue10 months ago | Rizal Day (Philippines)A public holiday in the Philippines, known locally as Araw ng Kamatayan ni Dr. Jose Rizal.Holidays · Philippines · Philippines · Nager.Date | Philippines | annual | Nager.Date |
| Asara B’TevetA minor fast marking the siege of Jerusalem. Observed from dawn to nightfall.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| 25th anniversary: A series of bombings occurred around Metro Manila in the PhilippinesIn 2000, A series of bombings occurred around Metro Manila in the Philippines, killing 22 people and injuring around 100 others.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Tiger Woods, born 1975 (50 years)American golfer.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Your product data just got a job: Workflows is now outUnverifiedWorkflows allows users to automate actions like sending emails or Slack alerts directly from PostHog event data. It eliminates the need for external syncing...Tech · Releases · posthog · posthog | posthog | one-off | posthog | |
| Dec 29Mon10 months ago | 50th anniversary: Planted by unknown perpetrators, a bomb exploded (aftermath pictured) at...In 1975, Planted by unknown perpetrators, a bomb exploded (aftermath pictured) at LaGuardia Airport in New York City, killing 11 people and seriously injuring...History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| Annotations Rest API (v3) and additional improvementsUnverifiedDescription: We added new REST API endpoints to manage annotation categories and access new annotation fields (like end date). HC Docs have been updated...Tech · Releases · amplitude · amplitude | amplitude | one-off | amplitude | |
| Container Images (release 251229)UnverifiedQuay.io/deepgram/self-hosted-api:release-251229 Equivalent image to: quay.io/deepgram/self-hosted-api:1.173.4...Tech · Releases · deepgram · deepgram | deepgram | one-off | deepgram | |
| This Release Contains The Following ChangesUnverifiedExpands Aura-2 TTS language support - Adds TTS support for Dutch, German, French, Italian, and Japanese. See the relevant changelog entry . Reach out to...Tech · Releases · deepgram · deepgram | deepgram | one-off | deepgram | |
| Dec 28Sun10 months ago | 100th anniversary: The Tokyo Grand Sumo Association became the All Japan Sumo Association at the...In 1925, The Tokyo Grand Sumo Association became the All Japan Sumo Association at the instigation of Prince-Regent Hirohito, laying the foundations for the...History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| Holy Family of Jesus, Mary and JosephThe Sunday within the octave of Christmas.Religion · Catholic · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) | |
| Liu Xiaobo, born 1955 (70 years)Chinese author, academic, and activist, Nobel Prize laureate (died 2017).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Dec 27Sat10 months ago | Guru Gobind Singh GurpurabTentativeThe birth of Guru Gobind Singh, the tenth Guru, founder of the Khalsa. Pausha, Shukla 7. Regional dates can differ by a day.Religion · Sikhism · Wikipedia | – | annual | WikipediaComputed (rule) |
| First quarter moonThe Moon is half lit (waxing).Sky · Moon phases · 1:10 pm CT · NASA | – | monthly | NASAComputed (rule) | |
| Salman Khan, born 1965 (60 years)Indian film actor and producer.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day of Epidemic PreparednessA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Dec 26Fri10 months ago | Boxing Day (New Zealand)A public holiday in New Zealand.Holidays · New Zealand · New Zealand · Nager.Date | New Zealand | annual | Nager.Date |
| Day of Goodwill (South Africa)A public holiday in South Africa, officially St. Stephen's Day.Holidays · South Africa · South Africa · Nager.Date | South Africa | annual | Nager.Date | |
| St. Stephen's Day (United Kingdom)A public holiday in the United Kingdom, officially Boxing Day.Holidays · United Kingdom · United Kingdom · Nager.Date | United Kingdom | annual | Nager.Date | |
| Zartosht No-Diso (Fasli)The death anniversary of Zarathustra, Dae 11, in the Fasli calendar.Religion · Zoroastrianism · Wikipedia | – | annual | WikipediaComputed (rule) | |
| 200th anniversary: Imperial Russian Army officers led about 3,000 soldiers in protest against...In 1825, Imperial Russian Army officers led about 3,000 soldiers in protest against Nicholas I's assumption of the throne after his elder brother Konstantin...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| 225th anniversary: Philip Gidley King, Governor of New South Wales, ordered the formation of the...In 1800, Philip Gidley King, Governor of New South Wales, ordered the formation of the Governor's Body Guard of Light Horse, described as the first full-time...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Dec 25Thu10 months ago | Christmas DayA public holiday in the United States.Holidays · United States · United States · Nager.Date | United States | annual | Nager.Date |
| Christmas: the Nativity of JesusThe Christian feast of the birth of Jesus. A holy day of obligation for Catholics.Religion · Christianity · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) | |
| 300th anniversary: J. S. Bach led the first performance of the Christmas cantata Unser Mund sei...In 1725, J. S. Bach led the first performance of the Christmas cantata Unser Mund sei voll Lachens, BWV 110, making laughter audible in singing.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| 925th anniversary: Baldwin I was crowned the first king of Jerusalem (depicted) in the Church of...In 1100, Baldwin I was crowned the first king of Jerusalem (depicted) in the Church of the Nativity in Bethlehem.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |