Calendarby GlyphSeptember 2021 calendar
September 2021
PastNovember 2021
PastOctober 2021
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 →National Hispanic Heritage MonthNational Hispanic Heritage Month, observed across the US.Library of Congress and partners, computedDetails →Strange Loop 2021St. Louis, MO · IndependentA three-day tech conference in St. Louis, MO.IndependentDetails →Devoxx 2021Paris, France · IndependentA three-day tech conference in Paris, France.IndependentDetails →Linux Security Summit 2021Seattle, WA · IndependentA three-day tech conference in Seattle, WA.IndependentDetails →
PastSeptember 2021
National Day for Truth and Reconciliation (Canada)CanadaA public holiday in Canada.Nager.DateDetails →International Translation DayA United Nations international day.United NationsDetails →Conf42: SRE 2021Online · IndependentA tech conference, held online.IndependentDetails →DevOpsCon New York 2021New York, NY · IndependentA four-day tech conference in New York, NY.IndependentDetails →Embedded Linux Conference 2021Seattle, WA · IndependentA four-day tech conference in Seattle, WA.IndependentDetails →Open Source Summit 2021Seattle, WA · IndependentA four-day tech conference in Seattle, WA.IndependentDetails →Simchat TorahCelebrates finishing and restarting the annual Torah reading. Begins at sundown on Tue, September 28, 2021.Hebcal, computedDetails →Michaelmas (Saints Michael, Gabriel and Raphael)The feast of the archangels; in England one of the old quarter days.USCCB liturgical year, computedDetails →Michelle Bachelet, born 1951 (70 years)Chilean politician, President of Chile.WikipediaDetails →International Day of Awareness of Food Loss and WasteA United Nations international day.United NationsDetails →Linux Plumbers Conference 2021Dublin, Ireland · IndependentA three-day tech conference in Dublin, Ireland.IndependentDetails →Linux Security Summit Europe 2021Dublin, Ireland · IndependentA three-day tech conference in Dublin, Ireland.IndependentDetails →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 →Shemini AtzeretThe eighth day of assembly, right after Sukkot. Begins at sundown on Mon, September 27, 2021.Hebcal, computedDetails →Last quarter moonThe Moon is half lit (waning).NASA, computedDetails →200th anniversary: The Declaration of Independence of the Mexican Empire from Spain was drafted in...In 1821, The Declaration of Independence of the Mexican Empire from Spain was drafted in the National Palace in Mexico City.WikipediaDetails →International Day for Universal Access to InformationA United Nations international day.United NationsDetails →
Micron earnings (Q4 FY2021)Micron (MU)Micron reported Q4 FY2021 results after the market closed.EarningsDetails →ArbaeenForty days after Ashura: one of the largest annual pilgrimages in the world, on foot to Karbala. 2/20/1443 AH in the Umm al-Qura calendar. Begins the...Umm al-Qura calendar, computedDetails →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 →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 →Hoshana RabaThe seventh day of Sukkot, the last day of judgement of the High Holy Day season. Begins at sundown on Sun, September 26, 2021.Hebcal, computedDetails →25th anniversary: The Taliban drove Afghan President Burhanuddin Rabbani out of Kabul, tortured...In 1996, The Taliban drove Afghan President Burhanuddin Rabbani out of Kabul, tortured and murdered former president Mohammad Najibullah, and established the...WikipediaDetails →World Tourism DayA United Nations international day.United NationsDetails →SukkotThe Festival of Booths. Begins at sundown on Mon, September 20, 2021.Hebcal, computedDetails →International Day for the Total Elimination of Nuclear WeaponsA United Nations international day.United NationsDetails →Autumn HiganThe week of the equinox, when Japanese Buddhists visit and tidy family graves.Wikipedia, computedDetails →625th anniversary: Ottoman wars in Europe: Ottoman forces under Bayezid I defeated a Christian...In 1396, Ottoman wars in Europe: Ottoman forces under Bayezid I defeated a Christian alliance led by Sigismund of Hungary near present-day Nikopol, Bulgaria.WikipediaDetails →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 →AdaLoversConf 2021Tenerife, Spain · IndependentA tech conference in Tenerife, Spain.IndependentDetails →Heritage Day (South Africa)South AfricaA public holiday in South Africa.Nager.DateDetails →World Maritime DayA United Nations international day.United NationsDetails →Scenic City Summit 2021Online · IndependentA tech conference, held online.IndependentDetails →Wild West Hackin’ Fest - Deadwood 2021Online · IndependentA three-day tech conference, held online.IndependentDetails →Autumnal Equinox Day (Japan)JapanA public holiday in Japan.Nager.DateDetails →International Day of Sign LanguagesA United Nations international day.United NationsDetails →
Progress Software earnings (Q3 FY2021)Progress Software (PRGS)Progress Software reported Q3 FY2021 results after the market closed.EarningsDetails →UIG-Tagung 2021Online · IndependentA tech conference, held online.IndependentDetails →HexCon 2021Online · IndependentA three-day tech conference, held online.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 →Quebec Law 25: AssentQuebec, CanadaBill 64 assented to as S.Q. 2021, c. 25.RegulationsDetails →Chuseok (South Korea)South KoreaA public holiday in South Korea.Nager.DateDetails →Day following the Mid-Autumn Festival (Hong Kong)Hong KongA public holiday in Hong Kong.Nager.DateDetails →FOMC meetingFederal Reserve, WashingtonThe Federal Open Market Committee sets US interest rates; the statement comes at 2:00 pm ET on the last day, with the Summary of Economic Projections.Federal ReserveDetails →Devopsdays Houston 2021Houston, TX · IndependentA two-day tech conference in Houston, TX.IndependentDetails →Full Stack Day 2021Auckland, New Zealand · IndependentA two-day tech conference in Auckland, New Zealand.IndependentDetails →Mid-Autumn FestivalMooncakes under the harvest full moon; Chuseok in Korea falls on the same day. Day 15 of lunar month 8.Hong Kong Observatory, computedDetails →International Day of PeaceA United Nations international day.United NationsDetails →Chuseok (South Korea)South KoreaA public holiday in South Korea.Nager.DateDetails →Founders Day (Ghana)GhanaA public holiday in Ghana.Nager.DateDetails →Mid-Autumn Festival (China)ChinaA public holiday in China.Nager.DateDetails →Cao Dai: Festival of the Holy MotherThe feast of the Mother Goddess (Dieu Tri Kim Mau) at Tay Ninh. Day 15 of lunar month 8.Hong Kong Observatory, computedDetails →Nativity of the Theotokos (Julian calendar)The birth of Mary, one of the Twelve Great Feasts. September 8 in the Julian calendar.Orthodox Church in America, computedDetails →25th anniversary: The Defense of Marriage Act was passed by the United States Congress,...In 1996, The Defense of Marriage Act was passed by the United States Congress, prohibiting federal recognition of same-sex marriage, while allowing states to...WikipediaDetails →
Adobe earnings (Q3 FY2021)Adobe (ADBE)Adobe reported Q3 FY2021 results after the market closed.EarningsDetails →Full moon: Harvest MoonTraditional North American name: Harvest Moon. Moon 389,978 km from Earth.NASA, computedDetails →50th anniversary: Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from...In 1971, Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from the Atlantic, making it the first actively tracked tropical cyclone to do so.WikipediaDetails →Chuseok (South Korea)South KoreaA public holiday in South Korea.Nager.DateDetails →Respect for the Aged Day (Japan)JapanA public holiday in Japan.Nager.DateDetails →World Cleanup DayA United Nations international day.United NationsDetails →PyCon India 2021Online · IndependentA four-day tech conference, held online.IndependentDetails →Das Lakshana Parva (Digambara)Ten days on the ten virtues, the Digambara Paryushana, ending on Anant Chaturdashi. Bhadrapada, Shukla 5. Regional dates can differ by a day.Wikipedia, computedDetails →Ganesh ChaturthiThe birth of Ganesha; a ten-day festival ending with immersion (Anant Chaturdashi). Bhadrapada, Shukla 4. Regional dates can differ by a day.Wikipedia, computedDetails →Army Day (Chile)ChileA public holiday in Chile, known locally as Día de las Glorias del Ejército.Nager.DateDetails →175th anniversary: Near La Salette-Fallavaux in southeastern France, shepherd children Mélanie...In 1846, Near La Salette-Fallavaux in southeastern France, shepherd children Mélanie Calvat and Maximin Giraud reported a Marian apparition, now known as Our...WikipediaDetails →1925th anniversary: Nerva (depicted), the first of the "Five Good Emperors" of ancient Rome, came...In 96, Nerva (depicted), the first of the "Five Good Emperors" of ancient Rome, came to power following the assassination of his predecessor Domitian.WikipediaDetails →National holiday (Chile)ChileA public holiday in Chile, known locally as Fiestas Patrias.Nager.DateDetails →225th anniversary: War of the First Coalition: General Franz Petrasch's Austrian and Imperial...In 1796, War of the First Coalition: General Franz Petrasch's Austrian and Imperial troops stormed the French-held bridgehead over the Rhine river.WikipediaDetails →International Equal Pay DayA United Nations international day.United NationsDetails →Devopsdays Istanbul 2021Online · IndependentA tech conference, held online.IndependentDetails →World Patient Safety DayA United Nations international day.United NationsDetails →Devopsdays Washington, DC 2021Washington, Washington DC, DC · IndependentA two-day tech conference in Washington, Washington DC, DC.IndependentDetails →Kansas City Developer Conference 2021Kansas City, MO · IndependentA three-day tech conference in Kansas City, MO.IndependentDetails →Yom KippurThe Day of Atonement, the holiest day of the Jewish year; a 25-hour fast. Begins at sundown on Wed, September 15, 2021.Hebcal, computedDetails →Independence Day (Mexico)MexicoA public holiday in Mexico, known locally as Día de la Independencia.Nager.DateDetails →International Day for Interventional CardiologyA United Nations international day.United NationsDetails →International Day for the Preservation of the Ozone LayerA United Nations international day.United NationsDetails →International Day of Science, Technology and Innovation for the SouthA United Nations international day.United NationsDetails →ODSC APAC Virtual Conference 2021Online · ODSCA two-day tech conference, held online.ODSCDetails →Gahambar Paitishahem (harvest)The third Gahambar, the grain harvest, in the Fasli calendar.avesta.org Zoroastrian calendars, computedDetails →Days of Awe (Ten Days of Repentance)The ten days from Rosh Hashanah to Yom Kippur. Begins at sundown on Mon, September 6, 2021.Hebcal, computedDetails →200th anniversary: The Province of Guatemala proclaimed the independence of Central America from...In 1821, The Province of Guatemala proclaimed the independence of Central America from the Spanish Empire.WikipediaDetails →Oliver Stone, born 1946 (75 years)American director, screenwriter, and producer.WikipediaDetails →Tommy Lee Jones, born 1946 (75 years)American actor, director, producer, and screenwriter.WikipediaDetails →International Day of DemocracyA United Nations international day.United NationsDetails →Software Architecture Summit Berlin 2021Berlin, Germany · IndependentA three-day tech conference in Berlin, Germany.IndependentDetails →Elevation of the Holy Cross (Revised Julian calendar)One of the Twelve Great Feasts, a strict fast day.Orthodox Church in America, computedDetails →Exaltation of the Holy CrossHoly Cross Day: honors the cross, from the dedication of the Church of the Holy Sepulchre in 335.USCCB liturgical year, computedDetails →Orthodox Church New Year (Julian calendar)The Indiction, the start of the church year. September 1 in the Julian calendar.Orthodox Church in America, computedDetails →Neptune at oppositionNeptune is opposite the Sun: up all night and at its brightest for the year.Astronomy Engine, computedDetails →
| Date | Event | |||
|---|---|---|---|---|
| PastNovember 2021 | ||||
| May 24Mon4 years 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 27 · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) |
| PastOctober 2021 | ||||
| Jul 25Sun5 years 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 20 · Bank of Thailand holiday calendar | – | annual | Bank of Thailand holiday calendar |
| Sep 15Wed5 years 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) |
| Sep 30Thu5 years ago | Strange Loop 2021A three-day tech conference in St. Louis, MO.Tech · Conferences · to Oct 2 · St. Louis, MO · Independent | St. Louis, MO; Independent | annual | Independent |
| Sep 29Wed5 years ago | Devoxx 2021A three-day tech conference in Paris, France.Tech · Conferences · to Oct 1 · Paris, France · Independent | Paris, France; Independent | annual | Independent |
| Linux Security Summit 2021A three-day tech conference in Seattle, WA.Tech · Conferences · to Oct 1 · Seattle, WA · Independent | Seattle, WA; Independent | annual | Independent | |
| PastSeptember 2021 | ||||
| Sep 30Thu5 years ago | National Day for Truth and Reconciliation (Canada)A public holiday in Canada.Holidays · Canada · Canada · Nager.Date | Canada | annual | Nager.Date |
| International Translation DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Conf42: SRE 2021A tech conference, held online.Tech · Conferences · Online · Independent | Online; Independent | annual | Independent | |
| Sep 27Mon5 years ago | DevOpsCon New York 2021A four-day tech conference in New York, NY.Tech · Conferences · to Sep 30 · New York, NY · Independent | New York, NY; Independent | annual | Independent |
| Embedded Linux Conference 2021A four-day tech conference in Seattle, WA.Tech · Conferences · to Sep 30 · Seattle, WA · Independent | Seattle, WA; Independent | annual | Independent | |
| Open Source Summit 2021A four-day tech conference in Seattle, WA.Tech · Conferences · to Sep 30 · Seattle, WA · Independent | Seattle, WA; Independent | annual | Independent | |
| Sep 29Wed5 years ago | Simchat TorahCelebrates finishing and restarting the annual Torah reading. Begins at sundown on Tue, September 28, 2021.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) |
| 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) | |
| Michelle Bachelet, born 1951 (70 years)Chilean politician, President of Chile.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day of Awareness of Food Loss and WasteA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 27Mon5 years ago | Linux Plumbers Conference 2021A three-day tech conference in Dublin, Ireland.Tech · Conferences · to Sep 29 · Dublin, Ireland · Independent | Dublin, Ireland; Independent | annual | Independent |
| Linux Security Summit Europe 2021A three-day tech conference in Dublin, Ireland.Tech · Conferences · to Sep 29 · Dublin, Ireland · Independent | Dublin, Ireland; Independent | annual | Independent | |
| Sep 28Tue5 years ago | 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) | |
| Shemini AtzeretThe eighth day of assembly, right after Sukkot. Begins at sundown on Mon, September 27, 2021.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| Last quarter moonThe Moon is half lit (waning).Sky · Moon phases · 8:57 pm CT · NASA | – | monthly | NASAComputed (rule) | |
| 200th anniversary: The Declaration of Independence of the Mexican Empire from Spain was drafted in...In 1821, The Declaration of Independence of the Mexican Empire from Spain was drafted in the National Palace in Mexico City.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day for Universal Access to InformationA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Micron earnings (Q4 FY2021)Micron reported Q4 FY2021 results after the market closed.Economy · Earnings · Micron (MU) · Earnings | Micron (MU) | quarterly | Earnings | |
| Sep 27Mon5 years ago | ArbaeenTentativeForty days after Ashura: one of the largest annual pilgrimages in the world, on foot to Karbala. 2/20/1443 AH in the Umm al-Qura calendar. Begins the...Religion · Shia Islam · Umm al-Qura calendar | – | annual | Umm al-Qura calendarComputed (rule) |
| 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) | |
| 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) | |
| Hoshana RabaThe seventh day of Sukkot, the last day of judgement of the High Holy Day season. Begins at sundown on Sun, September 26, 2021.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| 25th anniversary: The Taliban drove Afghan President Burhanuddin Rabbani out of Kabul, tortured...In 1996, The Taliban drove Afghan President Burhanuddin Rabbani out of Kabul, tortured and murdered former president Mohammad Najibullah, and established the...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| World Tourism DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 21Tue5 years ago | SukkotThe Festival of Booths. Begins at sundown on Mon, September 20, 2021.Religion · Judaism · to Sep 27 · Hebcal | – | annual | HebcalComputed (rule) |
| Sep 26Sun5 years ago | International Day for the Total Elimination of Nuclear WeaponsA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations |
| Sep 20Mon5 years 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 25Sat5 years ago | 625th anniversary: Ottoman wars in Europe: Ottoman forces under Bayezid I defeated a Christian...In 1396, Ottoman wars in Europe: Ottoman forces under Bayezid I defeated a Christian alliance led by Sigismund of Hungary near present-day Nikopol, Bulgaria.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| 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) | |
| AdaLoversConf 2021A tech conference in Tenerife, Spain.Tech · Conferences · Tenerife, Spain · Independent | Tenerife, Spain; Independent | annual | Independent | |
| Sep 24Fri5 years ago | Heritage Day (South Africa)A public holiday in South Africa.Holidays · South Africa · South Africa · Nager.Date | South Africa | annual | Nager.Date |
| World Maritime DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Scenic City Summit 2021A tech conference, held online.Tech · Conferences · Online · Independent | Online; Independent | annual | Independent | |
| Sep 22Wed5 years ago | Wild West Hackin’ Fest - Deadwood 2021A three-day tech conference, held online.Tech · Conferences · to Sep 24 · Online · Independent | Online; Independent | annual | Independent |
| Sep 23Thu5 years ago | Autumnal Equinox Day (Japan)A public holiday in Japan.Holidays · Japan · Japan · Nager.Date | Japan | annual | Nager.Date |
| International Day of Sign LanguagesA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Progress Software earnings (Q3 FY2021)Progress Software reported Q3 FY2021 results after the market closed.Economy · Earnings · Progress Software (PRGS) · Earnings | Progress Software (PRGS) | quarterly | Earnings | |
| UIG-Tagung 2021A tech conference, held online.Tech · Conferences · Online · Independent | Online; Independent | annual | Independent | |
| Sep 21Tue5 years ago | HexCon 2021A three-day tech conference, held online.Tech · Conferences · to Sep 23 · Online · Independent | Online; Independent | annual | Independent |
| Sep 22Wed5 years ago | September equinoxAutumn begins in the Northern Hemisphere, spring in the Southern.Sky · Solstices and equinoxes · 2:20 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) | |
| Quebec Law 25: AssentBill 64 assented to as S.Q. 2021, c. 25.Tech · Compliance deadlines · Quebec, Canada · Regulations | Quebec, Canada | one-off | Regulations | |
| Chuseok (South Korea)A public holiday in South Korea.Holidays · South Korea · South Korea · Nager.Date | South Korea | annual | Nager.Date | |
| Day following the Mid-Autumn Festival (Hong Kong)A public holiday in Hong Kong.Holidays · Hong Kong · Hong Kong · Nager.Date | Hong Kong | annual | Nager.Date | |
| Sep 21Tue5 years ago | FOMC meetingThe Federal Open Market Committee sets US interest rates; the statement comes at 2:00 pm ET on the last day, with the Summary of Economic Projections.Economy · Federal Reserve · 1:00 pm ET · to Sep 22 · Federal Reserve, Washington · Federal Reserve | Federal Reserve, Washington | eight times a year | Federal Reserve |
| Devopsdays Houston 2021A two-day tech conference in Houston, TX.Tech · Conferences · to Sep 22 · Houston, TX · Independent | Houston, TX; Independent | annual | Independent | |
| Full Stack Day 2021A two-day tech conference in Auckland, New Zealand.Tech · Conferences · to Sep 22 · Auckland, New Zealand · Independent | Auckland, New Zealand; Independent | annual | Independent | |
| Mid-Autumn FestivalMooncakes under the harvest full moon; Chuseok in Korea falls on the same day. Day 15 of lunar month 8.Culture · Lunar calendar festivals · Hong Kong Observatory | – | annual | Hong Kong ObservatoryComputed (rule) | |
| International Day of PeaceA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Chuseok (South Korea)A public holiday in South Korea.Holidays · South Korea · South Korea · Nager.Date | South Korea | annual | Nager.Date | |
| Founders Day (Ghana)A public holiday in Ghana.Holidays · Ghana · Ghana · Nager.Date | Ghana | annual | Nager.Date | |
| Mid-Autumn Festival (China)A public holiday in China.Holidays · China · China · Nager.Date | China | annual | Nager.Date | |
| Cao Dai: Festival of the Holy MotherThe feast of the Mother Goddess (Dieu Tri Kim Mau) at Tay Ninh. Day 15 of lunar month 8.Religion · Cao Dai · Hong Kong Observatory | – | annual | Hong Kong ObservatoryComputed (rule) | |
| Nativity of the Theotokos (Julian calendar)The birth of Mary, one of the Twelve Great Feasts. September 8 in the Julian calendar.Religion · Eastern Orthodox · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) | |
| 25th anniversary: The Defense of Marriage Act was passed by the United States Congress,...In 1996, The Defense of Marriage Act was passed by the United States Congress, prohibiting federal recognition of same-sex marriage, while allowing states to...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Adobe earnings (Q3 FY2021)Adobe reported Q3 FY2021 results after the market closed.Economy · Earnings · Adobe (ADBE) · Earnings | Adobe (ADBE) | quarterly | Earnings | |
| Sep 20Mon5 years ago | Full moon: Harvest MoonTraditional North American name: Harvest Moon. Moon 389,978 km from Earth.Sky · Moon phases · 6:55 pm CT · NASA | – | monthly | NASAComputed (rule) |
| 50th anniversary: Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from...In 1971, Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from the Atlantic, making it the first actively tracked tropical cyclone to do so.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Chuseok (South Korea)A public holiday in South Korea.Holidays · South Korea · South Korea · Nager.Date | South Korea | annual | Nager.Date | |
| Respect for the Aged Day (Japan)A public holiday in Japan.Holidays · Japan · Japan · Nager.Date | Japan | annual | Nager.Date | |
| World Cleanup DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 17Fri5 years ago | PyCon India 2021A four-day tech conference, held online.Tech · Conferences · to Sep 20 · Online · Independent | Online; Independent | annual | Independent |
| Sep 11Sat5 years ago | Das Lakshana Parva (Digambara)TentativeTen days on the ten virtues, the Digambara Paryushana, ending on Anant Chaturdashi. Bhadrapada, Shukla 5. Regional dates can differ by a day.Religion · Jainism · to Sep 20 · Wikipedia | – | annual | WikipediaComputed (rule) |
| Sep 10Fri5 years ago | Ganesh ChaturthiTentativeThe birth of Ganesha; a ten-day festival ending with immersion (Anant Chaturdashi). Bhadrapada, Shukla 4. Regional dates can differ by a day.Religion · Hinduism · to Sep 20 · Wikipedia | – | annual | WikipediaComputed (rule) |
| Sep 19Sun5 years ago | Army Day (Chile)A public holiday in Chile, known locally as Día de las Glorias del Ejército.Holidays · Chile · Chile · Nager.Date | Chile | annual | Nager.Date |
| 175th anniversary: Near La Salette-Fallavaux in southeastern France, shepherd children Mélanie...In 1846, Near La Salette-Fallavaux in southeastern France, shepherd children Mélanie Calvat and Maximin Giraud reported a Marian apparition, now known as Our...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Sep 18Sat5 years ago | 1925th anniversary: Nerva (depicted), the first of the "Five Good Emperors" of ancient Rome, came...In 96, Nerva (depicted), the first of the "Five Good Emperors" of ancient Rome, came to power following the assassination of his predecessor Domitian.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| National holiday (Chile)A public holiday in Chile, known locally as Fiestas Patrias.Holidays · Chile · Chile · Nager.Date | Chile | annual | Nager.Date | |
| 225th anniversary: War of the First Coalition: General Franz Petrasch's Austrian and Imperial...In 1796, War of the First Coalition: General Franz Petrasch's Austrian and Imperial troops stormed the French-held bridgehead over the Rhine river.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Equal Pay DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Devopsdays Istanbul 2021A tech conference, held online.Tech · Conferences · Online · Independent | Online; Independent | annual | Independent | |
| Sep 17Fri5 years ago | World Patient Safety DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations |
| Sep 16Thu5 years ago | Devopsdays Washington, DC 2021A two-day tech conference in Washington, Washington DC, DC.Tech · Conferences · to Sep 17 · Washington, Washington DC, DC · Independent | Washington, Washington DC, DC; Independent | annual | Independent |
| Sep 15Wed5 years ago | Kansas City Developer Conference 2021A three-day tech conference in Kansas City, MO.Tech · Conferences · to Sep 17 · Kansas City, MO · Independent | Kansas City, MO; Independent | annual | Independent |
| Sep 16Thu5 years ago | Yom KippurThe Day of Atonement, the holiest day of the Jewish year; a 25-hour fast. Begins at sundown on Wed, September 15, 2021.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) |
| Independence Day (Mexico)A public holiday in Mexico, known locally as Día de la Independencia.Holidays · Mexico · Mexico · Nager.Date | Mexico | annual | Nager.Date | |
| International Day for Interventional CardiologyA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| International Day for the Preservation of the Ozone LayerA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| International Day of Science, Technology and Innovation for the SouthA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 15Wed5 years ago | ODSC APAC Virtual Conference 2021A two-day tech conference, held online.Tech · Conferences · to Sep 16 · Online · ODSC | Online; ODSC | annual | ODSC |
| Sep 12Sun5 years ago | Gahambar Paitishahem (harvest)The third Gahambar, the grain harvest, in the Fasli calendar.Religion · Zoroastrianism · to Sep 16 · avesta.org Zoroastrian calendars | – | annual | avesta.org Zoroastrian calendarsComputed (rule) |
| Sep 7Tue5 years ago | Days of Awe (Ten Days of Repentance)The ten days from Rosh Hashanah to Yom Kippur. Begins at sundown on Mon, September 6, 2021.Religion · Judaism · to Sep 16 · Hebcal | – | annual | HebcalComputed (rule) |
| Sep 15Wed5 years ago | 200th anniversary: The Province of Guatemala proclaimed the independence of Central America from...In 1821, The Province of Guatemala proclaimed the independence of Central America from the Spanish Empire.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| Oliver Stone, born 1946 (75 years)American director, screenwriter, and producer.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Tommy Lee Jones, born 1946 (75 years)American actor, director, producer, and screenwriter.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day of DemocracyA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Sep 13Mon5 years ago | Software Architecture Summit Berlin 2021A three-day tech conference in Berlin, Germany.Tech · Conferences · to Sep 15 · Berlin, Germany · Independent | Berlin, Germany; Independent | annual | Independent |
| Sep 14Tue5 years ago | Elevation of the Holy Cross (Revised Julian calendar)One of the Twelve Great Feasts, a strict fast day.Religion · Eastern Orthodox · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) |
| Exaltation of the Holy CrossHoly Cross Day: honors the cross, from the dedication of the Church of the Holy Sepulchre in 335.Religion · Christianity · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) | |
| Orthodox Church New Year (Julian calendar)The Indiction, the start of the church year. September 1 in the Julian calendar.Religion · Eastern Orthodox · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) | |
| 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) | |