September 2026 calendar
Holidays, religious days, the sky, sports, elections and more, with sources.
September 2026
146 events
| Date | Event | When | |||
|---|---|---|---|---|---|
| Aug 22Sat | 2026 Vuelta a EspañaSports · Cycling · to Sep 13 · Monaco to Granada | Monaco to Granada | annual | Wikipedia | 33 days ago |
| Minnesota Renaissance Festival 2026Culture · Minnesota · to Oct 4 · Shakopee | Shakopee | annual | Minnesota Renaissance Festival | Now | |
| Aug 27Thu | Minnesota State Fair 2026Culture · Minnesota · to Sep 7 · State Fairgrounds, Falcon Heights | State Fairgrounds, Falcon Heights | annual | Minnesota State FairComputed (rule) | 28 days ago |
| Aug 30Sun | 2026 US Open (tennis)Sports · Tennis · to Sep 13 · USTA Billie Jean King National Tennis Center, New York | USTA Billie Jean King National Tennis Center, New York | annual | Wikipedia | 25 days ago |
| Sep 1Tue | Bear season opens (MN)Outdoors · Hunting · to Oct 18 · Permit areas & no-quota area | Permit areas & no-quota area | annual | Minnesota DNR | Now |
| Roh Moo-hyun, born 1946 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 23 days ago | |
| MongoDB earnings (Q2 FY2027)Economy · Earnings | MongoDB (MDB) | quarterly | Quarterly | 23 days ago | |
| Sep 2Wed | AWS Summit Zurich 2026Data and AI · Conferences · Zurich, Zurich, Switzerland | Zurich, Zurich, Switzerland; Amazon Web Services | annual | Amazon Web Services | 22 days ago |
| 125th anniversary: U.S. vice president Theodore Roosevelt first publicly used the phrase "speak...History · Anniversaries | – | annual | Wikipedia | 22 days ago | |
| Salma Hayek, born 1966 (60 years)People · Birth anniversaries | – | annual | Wikipedia | 22 days ago | |
| 83rd Venice International Film FestivalCulture · Film festivals · to Sep 12 · Venice Lido | Venice Lido | annual | Wikipedia | 22 days ago | |
| Broadcom earnings (Q3 FY2026)Economy · Earnings | Broadcom (AVGO) | quarterly | Quarterly | 22 days ago | |
| Snowflake earnings (Q2 FY2027)Economy · Earnings | Snowflake (SNOW) | quarterly | Quarterly | 22 days ago | |
| Sep 3Thu | 375th anniversary: English Parliamentarian forces under Oliver Cromwell (pictured) won the Battle...History · Anniversaries | – | annual | Wikipedia | 21 days ago |
| AWS Summit Sao Paulo 2026Data and AI · Conferences · Sao Paulo, Sao Paulo, Brazil | Sao Paulo, Sao Paulo, Brazil; Amazon Web Services | annual | Amazon Web Services | 21 days ago | |
| 125th anniversary: At the Royal Exhibition Building (pictured) in Melbourne, the flag of Australia...History · Anniversaries | – | annual | Wikipedia | 21 days ago | |
| 25th anniversary: The Troubles: Ulster loyalists resumed a picket outside a Catholic girls'...History · Anniversaries | – | annual | Wikipedia | 21 days ago | |
| Zine El Abidine Ben Ali, born 1936 (90 years)People · Birth anniversaries | – | annual | Wikipedia | 21 days ago | |
| Sep 4Fri | Krishna JanmashtamiTentativeReligion · Hinduism | – | annual | WikipediaComputed (rule) | 20 days ago |
| 1550th anniversary: Germanic leader Odoacer captured Ravenna and deposed Emperor Romulus Augustus,...History · Anniversaries | – | annual | Wikipedia | 20 days ago | |
| Last quarter moonSky · Moon phases · 2:51 am CT | – | monthly | NASAComputed (rule) | 20 days ago | |
| Sep 5Sat | 100th anniversary: Forty-eight people died in a fire in a makeshift cinema in Dromcolliher, IrelandHistory · Anniversaries | – | annual | Wikipedia | 19 days ago |
| Freddie Mercury, born 1946 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 19 days ago | |
| Michael Keaton, born 1951 (75 years)People · Birth anniversaries | – | annual | Wikipedia | 19 days ago | |
| International Day of CharityObservances · UN international days | – | annual | United Nations | 19 days ago | |
| International Day of the World’s Indigenous Women and GirlsObservances · UN international days | – | annual | United Nations | 19 days ago | |
| Sep 6Sun | 50th anniversary: Soviet pilot Viktor Belenko landed his MiG-25 in Hakodate, Japan, declaring his...History · Anniversaries | – | annual | Wikipedia | 18 days ago |
| 125th anniversary: U.S. president William McKinley was fatally shot by anarchist Leon Czolgosz at...History · Anniversaries | – | annual | Wikipedia | 18 days ago | |
| Sep 7Mon | Labor DayHolidays · United States · United States | United States | annual | Nager.Date | 17 days ago |
| KubeCon + CloudNativeCon China 2026Data and AI · Conferences · to Sep 9 · Shanghai, China | Shanghai, China; CNCF / Linux Foundation | annual | CNCF / Linux Foundation | 17 days ago | |
| Independence Day (Brazil)Holidays · Brazil · Brazil | Brazil | annual | Nager.Date | 17 days ago | |
| Labor Day (Canada)Holidays · Canada · Canada | Canada | annual | Nager.Date | 17 days ago | |
| 125th anniversary: With Beijing occupied by foreign troops from the Eight-Nation Alliance, Qing...History · Anniversaries | – | annual | Wikipedia | 17 days ago | |
| International Day of Clean Air for Blue SkiesObservances · UN international days | – | annual | United Nations | 17 days ago | |
| International Day of Police CooperationObservances · UN international days | – | annual | United Nations | 17 days ago | |
| World Duchenne Awareness DayObservances · UN international days | – | annual | United Nations | 17 days ago | |
| Sep 8Tue | 300th anniversary: J. S. Bach led the first performance of Geist und Seele wird verwirret, a solo...History · Anniversaries | – | annual | Wikipedia | 16 days ago |
| International Literacy DayObservances · UN international days | – | annual | United Nations | 16 days ago | |
| Sep 9Wed | NFL season kickoff 2026Sports · NFL · Lumen Field, Seattle | Lumen Field, Seattle | annual | Wikipedia | 15 days ago |
| 25th anniversary: Two al-Qaeda attackers assassinated Ahmad Shah Massoud, a pivotal Afghan...History · Anniversaries | – | annual | Wikipedia | 15 days ago | |
| Adam Sandler, born 1966 (60 years)People · Birth anniversaries | – | annual | Wikipedia | 15 days ago | |
| International Day to Protect Education from AttackObservances · UN international days | – | annual | United Nations | 15 days ago | |
| Sep 10Thu | New moonSky · Moon phases · 10:27 pm CT | – | monthly | NASAComputed (rule) | 14 days ago |
| Snowflake World Tour Bengaluru 2026Data and AI · Conferences · Bengaluru, Karnataka, India | Bengaluru, Karnataka, India; Snowflake | annual | Snowflake | 14 days ago | |
| 2026 Toronto International Film FestivalCulture · Film festivals · to Sep 20 · Toronto | Toronto | annual | Wikipedia | 14 days ago | |
| Adobe earnings (Q3 FY2026)Economy · Earnings | Adobe (ADBE) | quarterly | Quarterly | 14 days ago | |
| Oracle earnings (Q1 FY2027)Economy · Earnings | Oracle (ORCL) | quarterly | Quarterly | 14 days ago | |
| Sep 11Fri | 250th anniversary: British and American leaders held a peace conference on Staten Island, New...History · Anniversaries | – | annual | Wikipedia | 13 days ago |
| 175th anniversary: In a fight near Christiana, Pennsylvania, a group of escaped slaves and free...History · Anniversaries | – | annual | Wikipedia | 13 days ago | |
| 25th anniversary: al-Qaeda hijacked four passenger airliners to carry out a series of terrorist...History · Anniversaries | – | annual | Wikipedia | 13 days ago | |
| Sep 12Sat | Rosh HashanahReligion · Judaism · to Sep 13 | – | annual | HebcalComputed (rule) | 12 days ago |
| United Nations Day for South-South CooperationObservances · UN international days | – | annual | United Nations | 12 days ago | |
| Sep 13Sun | Minnesota Vikings 2026 season openerSports · Minnesota teams | – | annual | Wikipedia | 11 days ago |
| National Grandparents DayObservances · Days | – | annual | US CodeComputed (rule) | 11 days ago | |
| Sep 14Mon | Ganesh ChaturthiTentativeReligion · Hinduism · to Sep 24 | – | annual | WikipediaComputed (rule) | Now |
| 78th Primetime Emmy AwardsCulture · Awards · Peacock Theater, Los Angeles | Peacock Theater, Los Angeles | annual | Wikipedia | 10 days ago | |
| Fast of GedaliahReligion · Judaism | – | annual | HebcalComputed (rule) | 10 days ago | |
| 125th anniversary: Theodore Roosevelt became President of the United States at age 42, the...History · Anniversaries | – | annual | Wikipedia | 10 days ago | |
| MN Cup Grand Finale 2026Data and AI · Conferences · Minneapolis, MN | Minneapolis, MN; Carlson School of Management, University of Minnesota | annual | Carlson School of Management, University of Minnesota | 10 days ago | |
| Twin Cities Startup Week 2026Data and AI · Conferences · to Sep 18 · Minneapolis, MN | Minneapolis, MN; Twin Cities Startup Week | annual | Twin Cities Startup Week | 10 days ago | |
| Sep 15Tue | FOMC meetingEconomy · Federal Reserve · 1:00 pm ET · to Sep 16 · Federal Reserve, Washington | Federal Reserve, Washington | eight times a year | Federal Reserve | 9 days ago |
| 250th anniversary: American Revolutionary War: British forces made an unopposed amphibious landing...History · Anniversaries | – | annual | Wikipedia | 9 days ago | |
| National Hispanic Heritage MonthObservances · Heritage months · to Oct 15 | – | annual | Library of Congress and partnersComputed (rule) | Now | |
| dbt Summit 2026Data and AI · Conferences · to Sep 18 · Las Vegas, NV | Las Vegas, NV; dbt Labs | annual | dbt Labs | 9 days ago | |
| Dreamforce 2026Data and AI · Conferences · to Sep 17 · San Francisco, CA | San Francisco, CA; Salesforce | annual | Salesforce | 9 days ago | |
| Oliver Stone, born 1946 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 9 days ago | |
| Tommy Lee Jones, born 1946 (80 years)People · Birth anniversaries | – | annual | Wikipedia | 9 days ago | |
| International Day of DemocracyObservances · UN international days | – | annual | United Nations | 9 days ago | |
| Sep 16Wed | 250th anniversary: American Revolutionary War: American colonists defeated British troops at the...History · Anniversaries | – | annual | Wikipedia | 8 days ago |
| Data + AI World Tour Sao Paulo 2026Data and AI · Conferences · Sao Paulo, Sao Paulo, Brazil | Sao Paulo, Sao Paulo, Brazil; Databricks | annual | Databricks | 8 days ago | |
| Data + AI World Tour Singapore 2026Data and AI · Conferences · Singapore, Singapore | Singapore, Singapore; Databricks | annual | Databricks | 8 days ago | |
| Data + AI World Tour Sydney 2026Data and AI · Conferences · Sydney, New South Wales, Australia | Sydney, New South Wales, Australia; Databricks | annual | Databricks | 8 days ago | |
| Independence Day (Mexico)Holidays · Mexico · Mexico | Mexico | annual | Nager.Date | 8 days ago | |
| International Day for Interventional CardiologyObservances · UN international days | – | annual | United Nations | 8 days ago | |
| International Day for the Preservation of the Ozone LayerObservances · UN international days | – | annual | United Nations | 8 days ago | |
| International Day of Science, Technology and Innovation for the SouthObservances · UN international days | – | annual | United Nations | 8 days ago | |
| Sep 17Thu | 850th anniversary: Byzantine–Seljuk wars: At the Battle of Myriokephalon in Phrygia, the Seljuq...History · Anniversaries | – | annual | Wikipedia | 7 days ago |
| 25th anniversary: American president George W. Bush delivered remarks at the Islamic Center of...History · Anniversaries | – | annual | Wikipedia | 7 days ago | |
| Bernhard Riemann, born 1826 (200 years)People · Birth anniversaries | – | annual | Wikipedia | 7 days ago | |
| World Patient Safety DayObservances · UN international days | – | annual | United Nations | 7 days ago | |
| Sep 18Fri | First quarter moonSky · Moon phases · 3:44 pm CT | – | monthly | NASAComputed (rule) | 6 days ago |
| 175th anniversary: The New York Times, the largest metropolitan newspaper in the United States,...History · Anniversaries | – | annual | Wikipedia | 6 days ago | |
| Ronaldo, born 1976 (50 years)People · Birth anniversaries | – | annual | Wikipedia | 6 days ago | |
| International Equal Pay DayObservances · UN international days | – | annual | United Nations | 6 days ago | |
| Startup World Cup Twin Cities Regional 2026Data and AI · Conferences · Minneapolis, MN | Minneapolis, MN; Twin Cities Startup Week | annual | Twin Cities Startup Week | 6 days ago | |
| Sep 19Sat | Deer Archery season opens (MN)Outdoors · Hunting · to Dec 31 · Statewide | Statewide | annual | Minnesota DNR | Now |
| 2026 Asian GamesSports · Other sports · to Oct 4 · Aichi and Nagoya | Aichi and Nagoya | every few years | Wikipedia | Now | |
| 50th anniversary: An unidentified flying object over Tehran in Iran was observed by multiple...History · Anniversaries | – | annual | Wikipedia | 5 days ago | |
| Rabbit, Cottontail & Snowshoe Hare season opens (MN)Outdoors · Hunting · to Feb 28 · Statewide | Statewide | annual | Minnesota DNR | Now | |
| Rabbit, Jack season opens (MN)Outdoors · Hunting · to Feb 28 · Statewide | Statewide | annual | Minnesota DNR | Now | |
| Squirrel, Gray & Fox season opens (MN)Outdoors · Hunting · to Feb 28 · Statewide | Statewide | annual | Minnesota DNR | Now | |
| Sep 20Sun | World Cleanup DayObservances · UN international days | – | annual | United Nations | 4 days ago |
| Sep 21Mon | Yom KippurReligion · Judaism | – | annual | HebcalComputed (rule) | 3 days ago |
| 250th anniversary: American Revolutionary War: The Great Fire of New York (depicted) broke out...History · Anniversaries | – | annual | Wikipedia | 3 days ago | |
| International Day of PeaceObservances · UN international days | – | annual | United Nations | 3 days ago | |
| Gartner Data & Analytics Summit Mumbai 2026Data and AI · Conferences · to Sep 22 · Mumbai, Maharashtra, India | Mumbai, Maharashtra, India; Gartner | annual | Gartner | 3 days ago | |
| Respect for the Aged Day (Japan)Holidays · Japan · Japan | Japan | annual | Nager.Date | 3 days ago | |
| 25th anniversary: America: A Tribute to Heroes was broadcast by over 35 network and cable...History · Anniversaries | – | annual | Wikipedia | 3 days ago | |
| 25th anniversary: Several British Muslim youths in Peterborough, England, murdered 17-year-old...History · Anniversaries | – | annual | Wikipedia | 3 days ago | |
| Donald Glaser, born 1926 (100 years)People · Birth anniversaries | – | annual | Wikipedia | 3 days ago |
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.