September 2023 calendar
Holidays, religious days, the sky, sports, elections and more, with sources.
September 2023
94 events
| Date | Event | When | |||
|---|---|---|---|---|---|
| Aug 24Thu | Minnesota State Fair 2023Culture · Minnesota · to Sep 4 · State Fairgrounds, Falcon Heights | State Fairgrounds, Falcon Heights | annual | Minnesota State FairComputed (rule) | 3 yr ago |
| Aug 26Sat | 2023 Vuelta a EspañaSports · Cycling · to Sep 17 · Spain | Spain | annual | Wikipedia | 3 yr ago |
| Aug 28Mon | 2023 US Open (tennis)Sports · Tennis · to Sep 10 · USTA Billie Jean King National Tennis Center, New York | USTA Billie Jean King National Tennis Center, New York | annual | Wikipedia | 3 yr ago |
| Aug 30Wed | 80th Venice International Film FestivalCulture · Film festivals · to Sep 9 · Venice Lido | Venice Lido | annual | Wikipedia | 3 yr ago |
| Sep 1Fri | 50th anniversary: A 76-hour multinational rescue effort off the coast of Ireland resulted in the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| Sep 2Sat | 25th anniversary: A fire in the cockpit on Swissair Flight 111, en route from New York City to...History · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| Sep 4Mon | Labor DayHolidays · United States · United States | United States | annual | Nager.Date | 3 yr ago |
| Labor Day (Canada)Holidays · Canada · Canada | Canada | annual | Nager.Date | 3 yr ago | |
| Al-Biruni, born 973 (1050 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Sep 5Tue | International Day of CharityObservances · UN international days | – | annual | United Nations | 3 yr ago |
| International Day of the World’s Indigenous Women and GirlsObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 6Wed | Last quarter moonSky · Moon phases · 5:21 pm CT | – | monthly | NASAComputed (rule) | 3 yr ago |
| Sep 7Thu | Krishna JanmashtamiTentativeReligion · Hinduism | – | annual | WikipediaComputed (rule) | 3 yr ago |
| NFL season kickoff 2023Sports · NFL · Arrowhead Stadium, Kansas City | Arrowhead Stadium, Kansas City | annual | Wikipedia | 3 yr ago | |
| Independence Day (Brazil)Holidays · Brazil · Brazil | Brazil | annual | Nager.Date | 3 yr ago | |
| 2023 Toronto International Film FestivalCulture · Film festivals · to Sep 17 · Toronto | Toronto | annual | Wikipedia | 3 yr ago | |
| International Day of Clean Air for Blue SkiesObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| International Day of Police CooperationObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| World Duchenne Awareness DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 8Fri | 2023 Rugby World CupSports · Rugby · to Oct 28 · France | France | every few years | Wikipedia | 3 yr ago |
| International Literacy DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 9Sat | 2023 G20 New Delhi summitPolitics · Summits · to Sep 10 · New Delhi | New Delhi | annual | Wikipedia | 3 yr ago |
| International Day to Protect Education from AttackObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 10Sun | Minnesota Vikings 2023 season openerSports · Minnesota teams · U.S. Bank Stadium, Minneapolis | U.S. Bank Stadium, Minneapolis | annual | Wikipedia | 3 yr ago |
| National Grandparents DayObservances · Days | – | annual | US CodeComputed (rule) | 3 yr ago | |
| Sep 11Mon | Oracle earnings (Q1 FY2024)Economy · Earnings | Oracle (ORCL) | quarterly | Quarterly | 3 yr ago |
| Sep 12Tue | 75th anniversary: The People's Liberation Army launched the Liaoshen campaign, the first of the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| Paul Walker, born 1973 (50 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| United Nations Day for South-South CooperationObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 13Wed | 175th anniversary: An explosion drove an iron rod through the head of railroad foreman Phineas GageHistory · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| Fabio Cannavaro, born 1973 (50 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Sep 14Thu | New moonSky · Moon phases · 8:40 pm CT | – | monthly | NASAComputed (rule) | 3 yr ago |
| 300th anniversary: António Manoel de Vilhena, Grand Master of the Knights Hospitaller, laid the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Adobe earnings (Q3 FY2023)Economy · Earnings | Adobe (ADBE) | quarterly | Quarterly | 3 yr ago | |
| Sep 15Fri | National Hispanic Heritage MonthObservances · Heritage months · to Oct 15 | – | annual | Library of Congress and partnersComputed (rule) | 3 yr ago |
| International Day of DemocracyObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 16Sat | Rosh HashanahReligion · Judaism · to Sep 17 | – | annual | HebcalComputed (rule) | 3 yr ago |
| Independence Day (Mexico)Holidays · Mexico · Mexico | Mexico | annual | Nager.Date | 3 yr ago | |
| Lee Kuan Yew, born 1923 (100 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| International Day for Interventional CardiologyObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| International Day for the Preservation of the Ozone LayerObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| International Day of Science, Technology and Innovation for the SouthObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 17Sun | World Patient Safety DayObservances · UN international days | – | annual | United Nations | 3 yr ago |
| Sep 18Mon | 975th anniversary: Byzantine–Seljuk wars: Byzantine forces defeated their Seljuk opponents in the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| Respect for the Aged Day (Japan)Holidays · Japan · Japan | Japan | annual | Nager.Date | 3 yr ago | |
| Fast of GedaliahReligion · Judaism | – | annual | HebcalComputed (rule) | 3 yr ago | |
| 150th anniversary: Panic of 1873: The American bank Jay Cooke & Company declared bankruptcy,...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| 75th anniversary: The Australian cricket team's Invincibles tour of England concludedHistory · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| International Equal Pay DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 19Tue | Ganesh ChaturthiTentativeReligion · Hinduism · to Sep 29 | – | annual | WikipediaComputed (rule) | 3 yr ago |
| FOMC meetingEconomy · Federal Reserve · 1:00 pm ET · to Sep 20 · Federal Reserve, Washington | Federal Reserve, Washington | eight times a year | Federal Reserve | 3 yr ago | |
| UN General Assembly general debate 2023Politics · Summits · to Sep 26 · UN Headquarters, New York | UN Headquarters, New York | annual | Wikipedia | 3 yr ago | |
| Neptune at oppositionSky · Planets | – | about yearly | Astronomy EngineComputed (rule) | 3 yr ago | |
| Jeremy Irons, born 1948 (75 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Sep 20Wed | 50th anniversary: Billie Jean King defeated Bobby Riggs in straight sets at the Astrodome in...History · Anniversaries | – | annual | Wikipedia | 3 yr ago |
| 525th anniversary: A tsunami caused by the Meiō earthquake washed away the building housing the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| George R. R. Martin, born 1948 (75 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| World Cleanup DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 21Thu | International Day of PeaceObservances · UN international days | – | annual | United Nations | 3 yr ago |
| Sep 22Fri | Mercury at greatest western elongationSky · Planets | – | recurring | Astronomy EngineComputed (rule) | 3 yr ago |
| First quarter moonSky · Moon phases · 2:32 pm CT | – | monthly | NASAComputed (rule) | 3 yr ago | |
| 75th anniversary: Led by Gail Halvorsen, the United States Air Force began Operation "Little...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Sep 23Sat | September equinoxSky · Solstices and equinoxes · 1:49 am CT | – | annual | US Naval ObservatoryComputed (rule) | 3 yr ago |
| MabonReligion · Pagan and Wiccan | – | annual | Wheel of the YearComputed (rule) | 3 yr ago | |
| Autumnal Equinox Day (Japan)Holidays · Japan · Japan | Japan | annual | Nager.Date | 3 yr ago | |
| National Hunting and Fishing DayOutdoors · Parks and public lands | – | annual | National Hunting and Fishing DayComputed (rule) | 3 yr ago | |
| National Public Lands DayOutdoors · Parks and public lands | – | annual | National Park ServiceComputed (rule) | 3 yr ago | |
| Julio Iglesias, born 1943 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| International Day of Sign LanguagesObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 24Sun | 2023 Berlin MarathonSports · Marathons and athletics · Berlin | Berlin | annual | Wikipedia | 3 yr ago |
| World Maritime DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 25Mon | Yom KippurReligion · Judaism | – | annual | HebcalComputed (rule) | 3 yr ago |
| Heritage Day (South Africa)Holidays · South Africa · South Africa | South Africa | annual | Nager.Date | 3 yr ago | |
| Sep 26Tue | George Gershwin, born 1898 (125 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago |
| International Day for the Total Elimination of Nuclear WeaponsObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 27Wed | Mawlid an-NabiTentativeReligion · Islam | – | annual | Umm al-Qura calendarComputed (rule) | 3 yr ago |
| Prophet Muhammad's Birthday (Egypt)Holidays · Egypt · Egypt | Egypt | annual | Nager.Date | 3 yr ago | |
| World Tourism DayObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Micron earnings (Q4 FY2023)Economy · Earnings | Micron (MU) | quarterly | Quarterly | 3 yr ago | |
| Sep 28Thu | Chuseok (South Korea)Holidays · South Korea · South Korea | South Korea | annual | Nager.Date | 3 yr ago |
| International Day for Universal Access to InformationObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 29Fri | Full moon: Harvest Moon (supermoon)Sky · Moon phases · 4:58 am CT | – | monthly | NASAComputed (rule) | 3 yr ago |
| 2023 Ryder CupSports · Golf · to Oct 1 · Marco Simone Golf and Country Club, Rome | Marco Simone Golf and Country Club, Rome | every few years | Wikipedia | 3 yr ago | |
| Mid-Autumn FestivalCulture · Lunar calendar festivals | – | annual | Hong Kong ObservatoryComputed (rule) | 3 yr ago | |
| 100th anniversary: The Mandate for Palestine came into effect, officially creating the...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Lech Wałęsa, born 1943 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 3 yr ago | |
| Chuseok (South Korea)Holidays · South Korea · South Korea | South Korea | annual | Nager.Date | 3 yr ago | |
| Mid-Autumn Festival (China)Holidays · China · China | China | annual | Nager.Date | 3 yr ago | |
| International Day of Awareness of Food Loss and WasteObservances · UN international days | – | annual | United Nations | 3 yr ago | |
| Sep 30Sat | SukkotReligion · Judaism · to Oct 6 | – | annual | HebcalComputed (rule) | 3 yr ago |
| Chuseok (South Korea)Holidays · South Korea · South Korea | South Korea | annual | Nager.Date | 3 yr ago | |
| National Day for Truth and Reconciliation (Canada)Holidays · Canada · Canada | Canada | annual | Nager.Date | 3 yr ago | |
| 25th anniversary: The Internet Corporation for Assigned Names and Numbers (ICANN), a nonprofit...History · Anniversaries | – | annual | Wikipedia | 3 yr ago | |
| International Translation DayObservances · UN international days | – | annual | United Nations | 3 yr ago |
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.