Calendarby GlyphSeptember 2025 calendar
September 2025
PastNovember 2025
PastOctober 2025
National Hispanic Heritage MonthNational Hispanic Heritage Month, observed across the US.Library of Congress and partners, computedDetails →Vassa (Buddhist Rains Retreat)The three-month rains retreat of Theravada monks, from Khao Phansa, the day after Asalha Puja, to Ok Phansa.Bank of Thailand holiday calendarDetails →GOTO Copenhagen 2025Copenhagen, Denmark · IndependentA five-day tech conference in Copenhagen, Denmark.IndependentDetails →Durga PujaBengal’s great festival of the goddess Durga, from Maha Saptami to Vijaya Dashami (the goddess is welcomed on Shashthi, the day before). Ashvin, Shukla 7....Wikipedia, computedDetails →API Conference New York 2025New York, NY · IndependentA four-day tech conference in New York, NY.IndependentDetails →DevOpsCon New York 2025New York, NY · IndependentA four-day tech conference in New York, NY.IndependentDetails →MLcon New York 2025New York, NY · ML ConferenceJoin the ML Conference in New York, explore cutting-edge AI and machine learning technologies with hands-on workshops, keynotes, and sessions from industry...ML ConferenceDetails →Days of Awe (Ten Days of Repentance)The ten days from Rosh Hashanah to Yom Kippur. Begins at sundown on Mon, September 22, 2025.Hebcal, computedDetails →heise devSec 2025Regensburg, Germany · IndependentA two-day tech conference in Regensburg, Germany.IndependentDetails →
PastSeptember 2025
50th anniversary: The Boeing AH-64 Apache (example pictured), the primary attack helicopter for a...In 1975, The Boeing AH-64 Apache (example pictured), the primary attack helicopter for a number of countries, made its first flight.WikipediaDetails →National Day for Truth and Reconciliation (Canada)CanadaA public holiday in Canada.Nager.DateDetails →25th anniversary: Twelve-year-old Muhammad al-Durrah was shot dead in the Gaza StripIn 2000, Twelve-year-old Muhammad al-Durrah was shot dead in the Gaza Strip; the Israel Defense Forces initially accepted responsibility but retracted it five...WikipediaDetails →Marion Cotillard, born 1975 (50 years)French actress and singer.WikipediaDetails →International Translation DayA United Nations international day.United NationsDetails →Churchfront Conference 2025Littleton, CO · ChurchfrontChurchfront Conference 2025, a gathering for those interested in the intersection of church operations and technology, offering insights and networking...ChurchfrontDetails →Cloudflare One Client - WARP client for Linux (version 2025.7.176.0)cloudflareA new GA release for the Linux WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements...cloudflareDetails →Cloudflare One Client - WARP client for macOS (version 2025.7.176.0)cloudflareA new GA release for the macOS WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements....cloudflareDetails →Cloudflare One Client - WARP client for Windows (version 2025.7.176.0)cloudflareA new GA release for the Windows WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements....cloudflareDetails →Enterprise speed, enterprise standards with Bolt Cloud + SupabasesupabaseBolt Cloud has launched with Supabase as the default backend provider for all projects.supabaseDetails →Microsoft retires Azure App Service on Azure Arc enabled KubernetesMicrosoftAzure App Service ends support for this service.MicrosoftDetails →Microsoft retires Migrate to dedicated VM for your compute clustersMicrosoftAzure Machine Learning ends support for this service.MicrosoftDetails →Microsoft retires The Linux Consumption hosting plan of Azure FunctionsMicrosoftAzure Functions ends support for this service.MicrosoftDetails →Mistral AI retires Mistral Saba (25.02)Mistral AIMistral API ends support for this model; the replacement is Mistral Small 4.Mistral AIDetails →MongoDB retires MongoDB 8.1MongoDBMongoDB Atlas and tools ends support for this runtime.MongoDBDetails →New Relic Agent Control and Fleet Control are now generally available for Kubernetes!new-relicWe're thrilled to announce the General Availability of New Relic Control for Kubernetes, a major milestone in observability management that brings together...new-relicDetails →Peru PDPL and 2024 Regulation: Data portability appliesPeruArticle 76 on portability takes effect six months after the regulation enters into force.RegulationsDetails →PostgREST 13supabasePostgREST version 13 is now available with new features and improvements.supabaseDetails →DYNA Fall 2025New York, NY · IndependentA two-day tech conference in New York, NY.IndependentDetails →Sharad NavaratriNine nights of the goddess Durga; Durga Puja in Bengal. Ashvin, Shukla 1. Regional dates can differ by a day.Wikipedia, computedDetails →Plug and Play Net Zero Jerez applications closeSpain · Plug and PlayLast day to apply to Plug and Play Net Zero Jerez. Month only: the program names September 2025, not the day.Plug and PlayDetails →Michaelmas (Saints Michael, Gabriel and Raphael)The feast of the archangels; in England one of the old quarter days.USCCB liturgical year, computedDetails →First quarter moonThe Moon is half lit (waxing).NASA, computedDetails →International Day of Awareness of Food Loss and WasteA United Nations international day.United NationsDetails →
Progress Software earnings (Q3 FY2025)Progress Software (PRGS)Progress Software reported Q3 FY2025 results after the market closed.EarningsDetails →California SB 53 (TFAIA): SB 53 signedCaliforniaGovernor Newsom signs SB 53 (chapter 138).RegulationsDetails →Container Images (release 250929)deepgramQuay.io/deepgram/self-hosted-api:release-250929 Equivalent image to: quay.io/deepgram/self-hosted-api:1.159.2...deepgramDetails →Lovable Cloud + Supabase: The Default Platform for AI BuilderssupabaseLovable Cloud now uses Supabase as the default backend for all AI-generated projects.supabaseDetails →This Release Contains The Following ChangesdeepgramImportant : Please refrain from using this release version if you run Nova-3 diarization. General Improvements , Keeps our software up-to-date.deepgramDetails →Netflix Tudum 2025Online · NetflixNetflix’s global fan event celebrating upcoming shows, movies, and exclusives from the streaming giant.NetflixDetails →UN General Assembly general debate 2025UN Headquarters, New YorkWorld leaders address the UN General Assembly, the UN's 80th year.WikipediaDetails →50th anniversary: An attempted robbery of Spaghetti House, a restaurant in Knightsbridge, London,...In 1975, An attempted robbery of Spaghetti House, a restaurant in Knightsbridge, London, turned into a six-day hostage situation.WikipediaDetails →St. Wenceslas Day (Czechia)CzechiaA public holiday in Czechia, known locally as Den české státnosti.Nager.DateDetails →Confucius’s Birthday (Teachers’ Day, Taiwan)The Grand Ceremony at Taipei’s Confucius Temple and at Qufu, the birthplace of Confucius.Wikipedia, computedDetails →International Day for Universal Access to InformationA United Nations international day.United NationsDetails →2025 Ryder CupBethpage Black, New YorkEurope against the United States.WikipediaDetails →Meskel (Finding of the True Cross)Bonfires (Demera) for the finding of the Cross by Empress Helena; UNESCO intangible heritage. The Coptic Feast of the Cross falls on the same day.Ethiopian Orthodox Tewahedo Church, computedDetails →50th anniversary: Two members of ETA political-military and three members of the Revolutionary...In 1975, Two members of ETA political-military and three members of the Revolutionary Antifascist Patriotic Front, sentenced to death for murder, became the...WikipediaDetails →Meskel (Orthodox) (Ethiopia)EthiopiaA public holiday in Ethiopia.Nager.DateDetails →Elevation of the Holy Cross (Julian calendar)One of the Twelve Great Feasts, a strict fast day. September 14 in the Julian calendar.Orthodox Church in America, computedDetails →National Hunting and Fishing DayCelebrates hunters and anglers and their role in conservation; the fourth Saturday in September.National Hunting and Fishing Day, computedDetails →National Public Lands DayA fee-free day at national parks and other federal lands; the fourth Saturday in September.National Park Service, computedDetails →150th anniversary: The merchant ship Ellen Southard was wrecked in a storm at Liverpool, EnglandIn 1875, The merchant ship Ellen Southard was wrecked in a storm at Liverpool, England; the U.S. Congress subsequently awarded 27 Gold Lifesaving Medals to the...WikipediaDetails →200th anniversary: Locomotion No. 1 hauled the train on the opening day of the Stockton and...In 1825, Locomotion No. 1 hauled the train on the opening day of the Stockton and Darlington Railway, the first public railway in the world to use steam...WikipediaDetails →World Tourism DayA United Nations international day.United NationsDetails →BSides Kraków 2025Kraków, Poland · IndependentA tech conference in Kraków, Poland.IndependentDetails →Voxxed Days Crete 2025Heraklion, Greece · IndependentA two-day tech conference in Heraklion, Greece.IndependentDetails →Petro Poroshenko, born 1965 (60 years)Ukrainian businessman and politician, 5th President of Ukraine.WikipediaDetails →International Day for the Total Elimination of Nuclear WeaponsA United Nations international day.United NationsDetails →Meta Connect 2025Menlo Park, SF Bay Area, CA · MetaAn annual event showcasing advancements in VR, AR, and AI, bringing together developers, creators, and businesses to explore the future of immersive...MetaDetails →HackAIcon 2025Lisbon, Portugal · IndependentA two-day tech conference in Lisbon, Portugal.IndependentDetails →droidcon Berlin 2025Berlin, Germany · IndependentA three-day tech conference in Berlin, Germany.IndependentDetails →Okta Oktane 2025Las Vegas, NV · OktaOkta’s annual identity conference exploring the future of identity and security.OktaDetails →Oracle OpenWorld 2025San Francisco, SF Bay Area, CA · OracleOracle’s premier event for cloud applications and platform services, offering insights into digital transformation and IT solutions.OracleDetails →Autumn HiganThe week of the equinox, when Japanese Buddhists visit and tidy family graves.Wikipedia, computedDetails →1750th anniversary: After the assassination of Aurelian, Tacitus (depicted) was chosen by the...In 275, After the assassination of Aurelian, Tacitus (depicted) was chosen by the Senate to succeed him as Roman emperor.WikipediaDetails →250th anniversary: American Revolutionary War: Ethan Allen and a small force of American and...In 1775, American Revolutionary War: Ethan Allen and a small force of American and Quebec militia failed to capture the city of Montreal from British forces.WikipediaDetails →Fast of GedaliahA minor fast day after Rosh Hashanah. Observed from dawn to nightfall.Hebcal, computedDetails →225th anniversary: French Revolutionary Wars: After U.S. ships became involved, French forces...In 1800, French Revolutionary Wars: After U.S. ships became involved, French forces abandoned their invasion of the Batavian island of Curaçao.WikipediaDetails →
Accenture earnings (Q4 FY2025)Accenture (ACN)Accenture reported Q4 FY2025 results before the market opened.EarningsDetails →Browser Run - Browser Rendering Playwright GA, Stagehand support (Beta), and higher limitscloudflareWe’re shipping three updates to Browser Rendering: Playwright support is now Generally Available and synced with Playwright v1.55 , giving you a stable...cloudflareDetails →PGDay Napoli 2025Napels, Italy · IndependentA tech conference in Napels, Italy.IndependentDetails →Medical Technology IrelandGalway, Ireland · Medical Technology IrelandMedical Technology Ireland is the top medtech event in Ireland, showcasing the latest in medical devices and innovations. Connect with healthcare leaders to...Medical Technology IrelandDetails →Enterprise Tech Leadership Summit 2025Las Vegas, NV · IndependentA three-day tech conference in Las Vegas, NV.IndependentDetails →50th anniversary: Dougal Haston and Doug Scott of the Southwest Face expedition became the first...In 1975, Dougal Haston and Doug Scott of the Southwest Face expedition became the first people to reach the summit of Mount Everest by ascending one of its faces.WikipediaDetails →New Zealand Privacy Act: Privacy Amendment Act 2025 technical changes commenceNew ZealandTechnical amendments commence the day after Royal Assent (23 Sep 2025).RegulationsDetails →Heritage Day (South Africa)South AfricaA public holiday in South Africa.Nager.DateDetails →75th anniversary: The "Great Smoke Pall", generated by the Chinchaga fire, the largest recorded...In 1950, The "Great Smoke Pall", generated by the Chinchaga fire, the largest recorded fire in North American history, was first recorded in present-day...WikipediaDetails →World Maritime DayA United Nations international day.United NationsDetails →Data Governance Act: Legacy data intermediaries must complyEuropean UnionEntities that were already providing data intermediation services on 23 June 2022 had to comply with Chapter III by 24 Sep 2025 (Art 37).RegulationsDetails →For jobs that use GPUs, Dataflow now supports the flex-start provisioning modelgoogle-cloudFor jobs that use GPUs, Dataflow now supports the flex-start provisioning model. This flex-start provisioning model can improve your ability to get access...google-cloudDetails →Google Cloud retires gemini-1.5-flash-002Google CloudGemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash-lite.Google CloudDetails →Google Cloud retires gemini-1.5-pro-002Google CloudGemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash.Google CloudDetails →Google Cloud retires imagetextGoogle CloudGemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash-image.Google CloudDetails →Rosh HashanahThe Jewish New Year. Begins at sundown on Mon, September 22, 2025.Hebcal, computedDetails →beyond IoT 2025Cologne, Germany · IndependentA two-day tech conference in Cologne, Germany.IndependentDetails →Autumnal Equinox Day (Japan)JapanA public holiday in Japan.Nager.DateDetails →Neptune at oppositionNeptune is opposite the Sun: up all night and at its brightest for the year.Astronomy Engine, computedDetails →International Day of Sign LanguagesA United Nations international day.United NationsDetails →
Micron earnings (Q4 FY2025)Micron (MU)Micron reported Q4 FY2025 results after the market closed.EarningsDetails →Open Tech Day: Grafana Edition 2025Nürburgring, Germany · IndependentA tech conference in Nürburgring, Germany.IndependentDetails →BSides Edmonton 2025Edmonton, Canada · IndependentA two-day tech conference in Edmonton, Canada.IndependentDetails →September equinoxAutumn begins in the Northern Hemisphere, spring in the Southern.US Naval Observatory, computedDetails →MabonAutumn equinox sabbat. Northern Hemisphere dates.Wheel of the Year, computedDetails →50th anniversary: Sara Jane Moore attempted to assassinate U.S. president Gerald Ford, but failed...In 1975, Sara Jane Moore attempted to assassinate U.S. president Gerald Ford, but failed due to unfamiliarity with her weapon.WikipediaDetails →Founders Day (Ghana)GhanaA public holiday in Ghana.Nager.DateDetails →CCPA / CPRA: ADMT, risk assessment and cybersecurity audit regulations approvedCaliforniaOAL approves the CCPA Updates, Cybersecurity Audit, Risk Assessment, ADMT and Insurance regulations and files them with the Secretary of State. Not legal...RegulationsDetails →Saturn at oppositionSaturn is opposite the Sun: up all night and at its brightest for the year.Astronomy Engine, computedDetails →Partial solar eclipseNot visible from Minnesota.NASA Eclipse Web Site, computedDetails →
| Date | Event | |||
|---|---|---|---|---|
| PastNovember 2025 | ||||
| Jun 9Mon11 months ago | Ordinary Time (after Pentecost)The long second stretch of Ordinary Time, from the day after Pentecost to the Saturday before Advent.Religion · Catholic · to Nov 29 · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) |
| PastOctober 2025 | ||||
| Sep 15Mon1 year ago | National Hispanic Heritage MonthNational Hispanic Heritage Month, observed across the US.Observances · Heritage months · to Oct 15 · Library of Congress and partners | – | annual | Library of Congress and partnersComputed (rule) |
| Jul 11Fri1 year ago | Vassa (Buddhist Rains Retreat)The three-month rains retreat of Theravada monks, from Khao Phansa, the day after Asalha Puja, to Ok Phansa.Religion · Buddhism · to Oct 7 · Bank of Thailand holiday calendar | – | annual | Bank of Thailand holiday calendar |
| Sep 29Mon1 year ago | GOTO Copenhagen 2025A five-day tech conference in Copenhagen, Denmark.Tech · Conferences · to Oct 3 · Copenhagen, Denmark · Independent | Copenhagen, Denmark; Independent | annual | Independent |
| Durga PujaTentativeBengal’s great festival of the goddess Durga, from Maha Saptami to Vijaya Dashami (the goddess is welcomed on Shashthi, the day before). Ashvin, Shukla 7....Religion · Hinduism · to Oct 2 · Wikipedia | – | annual | WikipediaComputed (rule) | |
| API Conference New York 2025A four-day tech conference in New York, NY.Tech · Conferences · to Oct 2 · New York, NY · Independent | New York, NY; Independent | annual | Independent | |
| DevOpsCon New York 2025A four-day tech conference in New York, NY.Tech · Conferences · to Oct 2 · New York, NY · Independent | New York, NY; Independent | annual | Independent | |
| MLcon New York 2025Join the ML Conference in New York, explore cutting-edge AI and machine learning technologies with hands-on workshops, keynotes, and sessions from industry...Tech · Conferences · to Oct 2 · New York, NY · ML Conference | New York, NY; ML Conference | annual | ML Conference | |
| Sep 23Tue1 year ago | Days of Awe (Ten Days of Repentance)The ten days from Rosh Hashanah to Yom Kippur. Begins at sundown on Mon, September 22, 2025.Religion · Judaism · to Oct 2 · Hebcal | – | annual | HebcalComputed (rule) |
| Sep 30Tue1 year ago | heise devSec 2025A two-day tech conference in Regensburg, Germany.Tech · Conferences · to Oct 1 · Regensburg, Germany · Independent | Regensburg, Germany; Independent | annual | Independent |
| PastSeptember 2025 | ||||
| Sep 30Tue1 year ago | 50th anniversary: The Boeing AH-64 Apache (example pictured), the primary attack helicopter for a...In 1975, The Boeing AH-64 Apache (example pictured), the primary attack helicopter for a number of countries, made its first flight.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| National Day for Truth and Reconciliation (Canada)A public holiday in Canada.Holidays · Canada · Canada · Nager.Date | Canada | annual | Nager.Date | |
| 25th anniversary: Twelve-year-old Muhammad al-Durrah was shot dead in the Gaza StripIn 2000, Twelve-year-old Muhammad al-Durrah was shot dead in the Gaza Strip; the Israel Defense Forces initially accepted responsibility but retracted it five...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Marion Cotillard, born 1975 (50 years)French actress and singer.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Translation DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Churchfront Conference 2025Churchfront Conference 2025, a gathering for those interested in the intersection of church operations and technology, offering insights and networking...Tech · Conferences · Littleton, CO · Churchfront | Littleton, CO; Churchfront | annual | Churchfront | |
| Cloudflare One Client - WARP client for Linux (version 2025.7.176.0)UnverifiedA new GA release for the Linux WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements...Tech · Releases · cloudflare · cloudflare | cloudflare | one-off | cloudflare | |
| Cloudflare One Client - WARP client for macOS (version 2025.7.176.0)UnverifiedA new GA release for the macOS WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements....Tech · Releases · cloudflare · cloudflare | cloudflare | one-off | cloudflare | |
| Cloudflare One Client - WARP client for Windows (version 2025.7.176.0)UnverifiedA new GA release for the Windows WARP client is now available on the stable releases downloads page . This release contains minor fixes and improvements....Tech · Releases · cloudflare · cloudflare | cloudflare | one-off | cloudflare | |
| Enterprise speed, enterprise standards with Bolt Cloud + SupabaseUnverifiedBolt Cloud has launched with Supabase as the default backend provider for all projects.Tech · Releases · supabase · supabase | supabase | one-off | supabase | |
| Microsoft retires Azure App Service on Azure Arc enabled KubernetesUnverifiedAzure App Service ends support for this service.Tech · Retirements · Microsoft · Microsoft | Microsoft | one-off | Microsoft | |
| Microsoft retires Migrate to dedicated VM for your compute clustersUnverifiedAzure Machine Learning ends support for this service.Tech · Retirements · Microsoft · Microsoft | Microsoft | one-off | Microsoft | |
| Microsoft retires The Linux Consumption hosting plan of Azure FunctionsUnverifiedAzure Functions ends support for this service.Tech · Retirements · Microsoft · Microsoft | Microsoft | one-off | Microsoft | |
| Mistral AI retires Mistral Saba (25.02)UnverifiedMistral API ends support for this model; the replacement is Mistral Small 4.Tech · Retirements · Mistral AI · Mistral AI | Mistral AI | one-off | Mistral AI | |
| MongoDB retires MongoDB 8.1UnverifiedMongoDB Atlas and tools ends support for this runtime.Tech · Retirements · MongoDB · MongoDB | MongoDB | one-off | MongoDB | |
| New Relic Agent Control and Fleet Control are now generally available for Kubernetes!UnverifiedWe're thrilled to announce the General Availability of New Relic Control for Kubernetes, a major milestone in observability management that brings together...Tech · Releases · new-relic · new-relic | new-relic | one-off | new-relic | |
| Peru PDPL and 2024 Regulation: Data portability appliesTentativeArticle 76 on portability takes effect six months after the regulation enters into force.Tech · Compliance deadlines · Peru · Regulations | Peru | one-off | Regulations | |
| PostgREST 13UnverifiedPostgREST version 13 is now available with new features and improvements.Tech · Releases · supabase · supabase | supabase | one-off | supabase | |
| Sep 29Mon1 year ago | DYNA Fall 2025A two-day tech conference in New York, NY.Tech · Conferences · to Sep 30 · New York, NY · Independent | New York, NY; Independent | annual | Independent |
| Sep 22Mon1 year ago | Sharad NavaratriTentativeNine nights of the goddess Durga; Durga Puja in Bengal. Ashvin, Shukla 1. Regional dates can differ by a day.Religion · Hinduism · to Sep 30 · Wikipedia | – | annual | WikipediaComputed (rule) |
| Sep 1Mon1 year ago | Plug and Play Net Zero Jerez applications closeTentativeLast day to apply to Plug and Play Net Zero Jerez. Month only: the program names September 2025, not the day.Tech · Accelerators · to Sep 30 · Spain · Plug and Play | Spain; Plug and Play | – | Plug and Play |
| Sep 29Mon1 year ago | Michaelmas (Saints Michael, Gabriel and Raphael)The feast of the archangels; in England one of the old quarter days.Religion · Christianity · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) |
| First quarter moonThe Moon is half lit (waxing).Sky · Moon phases · 6:54 pm CT · NASA | – | monthly | NASAComputed (rule) | |
| International Day of Awareness of Food Loss and WasteA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Progress Software earnings (Q3 FY2025)Progress Software reported Q3 FY2025 results after the market closed.Economy · Earnings · Progress Software (PRGS) · Earnings | Progress Software (PRGS) | quarterly | Earnings | |
| California SB 53 (TFAIA): SB 53 signedGovernor Newsom signs SB 53 (chapter 138).Tech · Compliance deadlines · California · Regulations | California | one-off | Regulations | |
| Container Images (release 250929)UnverifiedQuay.io/deepgram/self-hosted-api:release-250929 Equivalent image to: quay.io/deepgram/self-hosted-api:1.159.2...Tech · Releases · deepgram · deepgram | deepgram | one-off | deepgram | |
| Lovable Cloud + Supabase: The Default Platform for AI BuildersUnverifiedLovable Cloud now uses Supabase as the default backend for all AI-generated projects.Tech · Releases · supabase · supabase | supabase | one-off | supabase | |
| This Release Contains The Following ChangesUnverifiedImportant : Please refrain from using this release version if you run Nova-3 diarization. General Improvements , Keeps our software up-to-date.Tech · Releases · deepgram · deepgram | deepgram | one-off | deepgram | |
| Sep 28Sun1 year ago | Netflix Tudum 2025Netflix’s global fan event celebrating upcoming shows, movies, and exclusives from the streaming giant.Tech · Conferences · to Sep 29 · Online · Netflix | Online; Netflix | annual | Netflix |
| Sep 23Tue1 year ago | UN General Assembly general debate 2025World leaders address the UN General Assembly, the UN's 80th year.Politics · Summits · to Sep 29 · UN Headquarters, New York · Wikipedia | UN Headquarters, New York | annual | Wikipedia |
| Sep 28Sun1 year ago | 50th anniversary: An attempted robbery of Spaghetti House, a restaurant in Knightsbridge, London,...In 1975, An attempted robbery of Spaghetti House, a restaurant in Knightsbridge, London, turned into a six-day hostage situation.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| St. Wenceslas Day (Czechia)A public holiday in Czechia, known locally as Den české státnosti.Holidays · Czechia · Czechia · Nager.Date | Czechia | annual | Nager.Date | |
| Confucius’s Birthday (Teachers’ Day, Taiwan)The Grand Ceremony at Taipei’s Confucius Temple and at Qufu, the birthplace of Confucius.Religion · Confucianism · Wikipedia | – | annual | WikipediaComputed (rule) | |
| International Day for Universal Access to InformationA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 26Fri1 year ago | 2025 Ryder CupEurope against the United States.Sports · Golf · to Sep 28 · Bethpage Black, New York · Wikipedia | Bethpage Black, New York | every few years | Wikipedia |
| Sep 27Sat1 year ago | Meskel (Finding of the True Cross)Bonfires (Demera) for the finding of the Cross by Empress Helena; UNESCO intangible heritage. The Coptic Feast of the Cross falls on the same day.Religion · Oriental Orthodox (Coptic, Ethiopian, Armenian) · Ethiopian Orthodox Tewahedo Church | – | annual | Ethiopian Orthodox Tewahedo ChurchComputed (rule) |
| 50th anniversary: Two members of ETA political-military and three members of the Revolutionary...In 1975, Two members of ETA political-military and three members of the Revolutionary Antifascist Patriotic Front, sentenced to death for murder, became the...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Meskel (Orthodox) (Ethiopia)A public holiday in Ethiopia.Holidays · Ethiopia · Ethiopia · Nager.Date | Ethiopia | annual | Nager.Date | |
| Elevation of the Holy Cross (Julian calendar)One of the Twelve Great Feasts, a strict fast day. September 14 in the Julian calendar.Religion · Eastern Orthodox · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) | |
| National Hunting and Fishing DayCelebrates hunters and anglers and their role in conservation; the fourth Saturday in September.Outdoors · Parks and public lands · National Hunting and Fishing Day | – | annual | National Hunting and Fishing DayComputed (rule) | |
| National Public Lands DayA fee-free day at national parks and other federal lands; the fourth Saturday in September.Outdoors · Parks and public lands · National Park Service | – | annual | National Park ServiceComputed (rule) | |
| 150th anniversary: The merchant ship Ellen Southard was wrecked in a storm at Liverpool, EnglandIn 1875, The merchant ship Ellen Southard was wrecked in a storm at Liverpool, England; the U.S. Congress subsequently awarded 27 Gold Lifesaving Medals to the...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| 200th anniversary: Locomotion No. 1 hauled the train on the opening day of the Stockton and...In 1825, Locomotion No. 1 hauled the train on the opening day of the Stockton and Darlington Railway, the first public railway in the world to use steam...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| World Tourism DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| BSides Kraków 2025A tech conference in Kraków, Poland.Tech · Conferences · Kraków, Poland · Independent | Kraków, Poland; Independent | annual | Independent | |
| Sep 26Fri1 year ago | Voxxed Days Crete 2025A two-day tech conference in Heraklion, Greece.Tech · Conferences · to Sep 27 · Heraklion, Greece · Independent | Heraklion, Greece; Independent | annual | Independent |
| Petro Poroshenko, born 1965 (60 years)Ukrainian businessman and politician, 5th President of Ukraine.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day for the Total Elimination of Nuclear WeaponsA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 25Thu1 year ago | Meta Connect 2025An annual event showcasing advancements in VR, AR, and AI, bringing together developers, creators, and businesses to explore the future of immersive...Tech · Conferences · to Sep 26 · Menlo Park, SF Bay Area, CA · Meta | Menlo Park, SF Bay Area, CA; Meta | annual | Meta |
| HackAIcon 2025A two-day tech conference in Lisbon, Portugal.Tech · Conferences · to Sep 26 · Lisbon, Portugal · Independent | Lisbon, Portugal; Independent | annual | Independent | |
| Sep 24Wed1 year ago | droidcon Berlin 2025A three-day tech conference in Berlin, Germany.Tech · Conferences · to Sep 26 · Berlin, Germany · Independent | Berlin, Germany; Independent | annual | Independent |
| Okta Oktane 2025Okta’s annual identity conference exploring the future of identity and security.Tech · Conferences · to Sep 26 · Las Vegas, NV · Okta | Las Vegas, NV; Okta | annual | Okta | |
| Sep 22Mon1 year ago | Oracle OpenWorld 2025Oracle’s premier event for cloud applications and platform services, offering insights into digital transformation and IT solutions.Tech · Conferences · to Sep 26 · San Francisco, SF Bay Area, CA · Oracle | San Francisco, SF Bay Area, CA; Oracle | annual | Oracle |
| Sep 20Sat1 year ago | Autumn HiganThe week of the equinox, when Japanese Buddhists visit and tidy family graves.Religion · Buddhism · to Sep 26 · Wikipedia | – | annual | WikipediaComputed (rule) |
| Sep 25Thu1 year ago | 1750th anniversary: After the assassination of Aurelian, Tacitus (depicted) was chosen by the...In 275, After the assassination of Aurelian, Tacitus (depicted) was chosen by the Senate to succeed him as Roman emperor.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| 250th anniversary: American Revolutionary War: Ethan Allen and a small force of American and...In 1775, American Revolutionary War: Ethan Allen and a small force of American and Quebec militia failed to capture the city of Montreal from British forces.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Fast of GedaliahA minor fast day after Rosh Hashanah. Observed from dawn to nightfall.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| 225th anniversary: French Revolutionary Wars: After U.S. ships became involved, French forces...In 1800, French Revolutionary Wars: After U.S. ships became involved, French forces abandoned their invasion of the Batavian island of Curaçao.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Accenture earnings (Q4 FY2025)Accenture reported Q4 FY2025 results before the market opened.Economy · Earnings · Accenture (ACN) · Earnings | Accenture (ACN) | quarterly | Earnings | |
| Browser Run - Browser Rendering Playwright GA, Stagehand support (Beta), and higher limitsUnverifiedWe’re shipping three updates to Browser Rendering: Playwright support is now Generally Available and synced with Playwright v1.55 , giving you a stable...Tech · Releases · cloudflare · cloudflare | cloudflare | one-off | cloudflare | |
| PGDay Napoli 2025A tech conference in Napels, Italy.Tech · Conferences · Napels, Italy · Independent | Napels, Italy; Independent | annual | Independent | |
| Sep 24Wed1 year ago | Medical Technology IrelandMedical Technology Ireland is the top medtech event in Ireland, showcasing the latest in medical devices and innovations. Connect with healthcare leaders to...Tech · Conferences · to Sep 25 · Galway, Ireland · Medical Technology Ireland | Galway, Ireland; Medical Technology Ireland | annual | Medical Technology Ireland |
| Sep 23Tue1 year ago | Enterprise Tech Leadership Summit 2025A three-day tech conference in Las Vegas, NV.Tech · Conferences · to Sep 25 · Las Vegas, NV · Independent | Las Vegas, NV; Independent | annual | Independent |
| Sep 24Wed1 year ago | 50th anniversary: Dougal Haston and Doug Scott of the Southwest Face expedition became the first...In 1975, Dougal Haston and Doug Scott of the Southwest Face expedition became the first people to reach the summit of Mount Everest by ascending one of its faces.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| New Zealand Privacy Act: Privacy Amendment Act 2025 technical changes commenceTechnical amendments commence the day after Royal Assent (23 Sep 2025).Tech · Compliance deadlines · New Zealand · Regulations | New Zealand | one-off | Regulations | |
| Heritage Day (South Africa)A public holiday in South Africa.Holidays · South Africa · South Africa · Nager.Date | South Africa | annual | Nager.Date | |
| 75th anniversary: The "Great Smoke Pall", generated by the Chinchaga fire, the largest recorded...In 1950, The "Great Smoke Pall", generated by the Chinchaga fire, the largest recorded fire in North American history, was first recorded in present-day...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| World Maritime DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Data Governance Act: Legacy data intermediaries must complyEntities that were already providing data intermediation services on 23 June 2022 had to comply with Chapter III by 24 Sep 2025 (Art 37).Tech · Compliance deadlines · European Union · Regulations | European Union | one-off | Regulations | |
| For jobs that use GPUs, Dataflow now supports the flex-start provisioning modelUnverifiedFor jobs that use GPUs, Dataflow now supports the flex-start provisioning model. This flex-start provisioning model can improve your ability to get access...Tech · Releases · google-cloud · google-cloud | google-cloud | one-off | google-cloud | |
| Google Cloud retires gemini-1.5-flash-002Gemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash-lite.Tech · Retirements · Google Cloud · Google Cloud | Google Cloud | one-off | Google Cloud | |
| Google Cloud retires gemini-1.5-pro-002Gemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash.Tech · Retirements · Google Cloud · Google Cloud | Google Cloud | one-off | Google Cloud | |
| Google Cloud retires imagetextGemini Enterprise Agent Platform (Vertex AI) ends support for this model; the replacement is gemini-2.5-flash-image.Tech · Retirements · Google Cloud · Google Cloud | Google Cloud | one-off | Google Cloud | |
| Sep 23Tue1 year ago | Rosh HashanahThe Jewish New Year. Begins at sundown on Mon, September 22, 2025.Religion · Judaism · to Sep 24 · Hebcal | – | annual | HebcalComputed (rule) |
| beyond IoT 2025A two-day tech conference in Cologne, Germany.Tech · Conferences · to Sep 24 · Cologne, Germany · Independent | Cologne, Germany; Independent | annual | Independent | |
| Autumnal Equinox Day (Japan)A public holiday in Japan.Holidays · Japan · Japan · Nager.Date | Japan | annual | Nager.Date | |
| Neptune at oppositionNeptune is opposite the Sun: up all night and at its brightest for the year.Sky · Planets · Astronomy Engine | – | about yearly | Astronomy EngineComputed (rule) | |
| International Day of Sign LanguagesA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Micron earnings (Q4 FY2025)Micron reported Q4 FY2025 results after the market closed.Economy · Earnings · Micron (MU) · Earnings | Micron (MU) | quarterly | Earnings | |
| Open Tech Day: Grafana Edition 2025A tech conference in Nürburgring, Germany.Tech · Conferences · Nürburgring, Germany · Independent | Nürburgring, Germany; Independent | annual | Independent | |
| Sep 22Mon1 year ago | BSides Edmonton 2025A two-day tech conference in Edmonton, Canada.Tech · Conferences · to Sep 23 · Edmonton, Canada · Independent | Edmonton, Canada; Independent | annual | Independent |
| September equinoxAutumn begins in the Northern Hemisphere, spring in the Southern.Sky · Solstices and equinoxes · 1:19 pm CT · US Naval Observatory | – | annual | US Naval ObservatoryComputed (rule) | |
| MabonAutumn equinox sabbat. Northern Hemisphere dates.Religion · Pagan and Wiccan · Wheel of the Year | – | annual | Wheel of the YearComputed (rule) | |
| 50th anniversary: Sara Jane Moore attempted to assassinate U.S. president Gerald Ford, but failed...In 1975, Sara Jane Moore attempted to assassinate U.S. president Gerald Ford, but failed due to unfamiliarity with her weapon.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Founders Day (Ghana)A public holiday in Ghana.Holidays · Ghana · Ghana · Nager.Date | Ghana | annual | Nager.Date | |
| CCPA / CPRA: ADMT, risk assessment and cybersecurity audit regulations approvedOAL approves the CCPA Updates, Cybersecurity Audit, Risk Assessment, ADMT and Insurance regulations and files them with the Secretary of State. Not legal...Tech · Compliance deadlines · California · Regulations | California | one-off | Regulations | |
| Sep 21Sun1 year ago | Saturn at oppositionSaturn is opposite the Sun: up all night and at its brightest for the year.Sky · Planets · Astronomy Engine | – | about yearly | Astronomy EngineComputed (rule) |
| Partial solar eclipseNot visible from Minnesota.Sky · Eclipses · 2:41 pm CT · NASA Eclipse Web Site | – | one-off | NASA Eclipse Web SiteComputed (rule) | |