Editing September 21 (section)

===1901–present===
*[[1921]] &ndash; A storage silo in Oppau, Germany, [[Oppau explosion|explodes]], killing 500–600 people.<ref>{{Cite web |title=French Ministry of Environment, Explosion in a nitrogenous fertiliser plant, ARIA 14373 |url=https://www.aria.developpement-durable.gouv.fr/wp-content/files_mf/FD_14373_oppau_1921_ang.pdf |url-status=live |archive-url=https://web.archive.org/web/20230806185119/https://www.aria.developpement-durable.gouv.fr/wp-content/files_mf/FD_14373_oppau_1921_ang.pdf |archive-date=August 6, 2023 |access-date=August 6, 2023 |website=ARIA}}</ref>
*[[1933]] &ndash; [[Salvador Lutteroth]] establishes Mexican professional wrestling.
*[[1934]] &ndash; A large [[1934 Muroto typhoon|typhoon]] hits western [[Honshu|Honshū]], Japan, killing more than 3,000 people.
*[[1937]] &ndash; [[J.R.R. Tolkien]]'s ''[[The Hobbit]]'' is published for the first time.<ref>{{cite news |last=Shippey |first=Tom |author-link=Tom Shippey |title=The Hobbit: What has made the book such an enduring success? |url=https://www.telegraph.co.uk/culture/books/booknews/9555838/The-Hobbit-What-has-made-the-book-such-an-enduring-success.html |archive-url=https://web.archive.org/web/20210127082027/https://www.telegraph.co.uk/culture/books/booknews/9555838/The-Hobbit-What-has-made-the-book-such-an-enduring-success.html |work=[[The Daily Telegraph]] |date=20 September 2012 |access-date=29 March 2022 |archive-date=27 January 2021 |url-status=live}}</ref> ([[September 22]] is celebrated by some fans as [[Hobbit Day]], however.) 
*[[1938]] &ndash; The [[1938 New England hurricane|Great Hurricane of 1938]] makes landfall on Long Island in [[New York (state)|New York]]. The death toll is estimated at 500–700 people.
*[[1939]] &ndash; Romanian Prime Minister [[Armand Călinescu]] is assassinated by the [[Iron Guard]].
*[[1942]] &ndash; [[The Holocaust in Ukraine]]: On the Jewish holiday of [[Yom Kippur]], Nazis send over 1,000 Jews of [[Pidhaitsi]] to [[Belzec extermination camp|Bełżec extermination camp]].
*  1942   &ndash; The Holocaust in Ukraine: In [[Dunaivtsi]], Ukraine, Nazis murder 2,588 Jews.
*  1942   &ndash; [[The Holocaust in Poland]]: At the end of Yom Kippur, Germans order Jews to permanently move from Konstantynów to [[Biała Podlaska]].
*  1942   &ndash; The [[Boeing B-29 Superfortress]] makes its maiden flight.
*[[1953]] &ndash; Lieutenant [[No Kum-sok]], a [[North Korea]]n [[Korean People's Army Air and Anti-Air Force|pilot]], defects to [[South Korea]] with his jet fighter.
*[[1957]] &ndash; ''[[Pamir (ship)|Pamir]]'', a four-masted [[barque]], was shipwrecked and sank off the [[Azores]] during [[Hurricane Carrie]].<ref>Hauke Goos. [https://magazin.spiegel.de/EpubDelivery/spiegel/pdf/51955556 "Die Seelenverkäufer"] (in German) - ''[[Der Spiegel]]'', 25/2007, pp.&nbsp;86–95</ref>
*[[1964]] &ndash; [[Malta]] gains independence from the [[United Kingdom]], but remains in the [[Commonwealth of Nations|Commonwealth]].
*  1964   &ndash; The [[North American XB-70 Valkyrie]], the world's fastest bomber, makes its maiden flight from [[Palmdale, California|Palmdale]], California.
*[[1965]] &ndash; [[The Gambia]], [[Maldives]] and [[Singapore]] are admitted as members of the [[United Nations]].
*[[1969]] &ndash; [[Mexicana de Aviación Flight 801]], a Boeing 727-100 passenger plane, crashes during a landing attempt in Mexico City, killing 27 of the 118 occupants.<ref>{{cite web |title=Crash of a Boeing 727-64 in Mexico City: 27 killed |url=https://www.baaa-acro.com/crash/crash-boeing-727-64-mexico-city-27-killed |publisher=Bureau of Aircraft Accidents Archives |access-date=16 May 2024}}</ref>
*[[1971]] &ndash; [[Bahrain]], [[Bhutan]] and [[Qatar]] join the United Nations.
*[[1972]] &ndash; Philippine President [[Ferdinand Marcos]] begins authoritarian rule by [[Proclamation № 1081|declaring martial law]].
*[[1976]] &ndash; [[Orlando Letelier]] is [[Assassination of Orlando Letelier|assassinated]] in [[Washington, D.C.]], at the order of [[Augusto Pinochet]].
*  1976   &ndash; [[Seychelles]] joins the United Nations.
*[[1981]] &ndash; [[Belize]] is granted full independence from the United Kingdom.
*  1981   &ndash; [[Sandra Day O'Connor]] is unanimously approved by the [[United States Senate|U.S. Senate]] as the first female Supreme Court justice.
*[[1984]] &ndash; [[Brunei]] joins the United Nations.
*[[1991]] &ndash; [[Armenia]] gains independence from the [[Soviet Union]].
*[[1993]] &ndash; Russian President [[Boris Yeltsin]] triggers a [[1993 Russian constitutional crisis|constitutional crisis]] when he suspends [[Duma|parliament]] and scraps [[Russian Constitution of 1978|the constitution]].
*  1993   &ndash; A [[1993 Sukhumi airliner attacks|Transair Georgian Airlines Tu-134 is shot down]] by a missile in the [[Black Sea]] near Sokhumi, Georgia.<ref>{{cite web |title=Tu-134A-3 c/n 40120 |url=https://www.scramble.nl/database/soviet/details/176_67926 |website=Soviet Transport Database }}</ref>
*[[1996]] &ndash; The [[Defense of Marriage Act]] is passed by the [[United States Congress]].
*[[1997]] &ndash; [[St. Olaf's Church, Tyrvää|St. Olaf's Church]], a stone church from the 16th century in [[Tyrvää]], [[Finland]], is burnt down by a burglar.<ref>{{Cite web|url=http://www.sastamalanseurakunta.fi/pyhaolavi/english.shtml|archiveurl=https://web.archive.org/web/20110720193052/http://www.sastamalanseurakunta.fi/pyhaolavi/english.shtml|url-status=dead|title=Church of St Olaf|archivedate=July 20, 2011}}</ref>
*[[1999]] &ndash; The [[1999 Jiji earthquake|Chi-Chi earthquake]] occurs in central Taiwan, leaving about 2,400 people dead.
*[[2001]] &ndash; ''[[America: A Tribute to Heroes]]'' is broadcast by over 35 network and cable channels, raising over $200&nbsp;million for the victims of the September 11 attacks.
*  2001 &ndash; [[murder of Ross Parker|Ross Parker is murdered]] in [[Peterborough|Peterborough, England]], by a gang of ten British Pakistani youths.
*  2001 &ndash; [[Aeroflot Flight 521]] conducted an emergency landing in [[Dubai International Airport]] after the crew members forgot to activate the landing gear circuit breaker with no fatalities recorded.
*[[2003]] &ndash; The [[Galileo (spacecraft)|Galileo spacecraft]] is terminated by sending it into Jupiter's atmosphere.
*[[2012]] &ndash; Three [[Egyptians|Egyptian]] militants open fire on a group of [[Israel Defense Forces|Israeli soldiers]] in a [[September 2012 southern Israel cross-border attack|southern Israel cross-border attack]].<ref>{{Cite news|url=https://www.ynetnews.com/articles/0,7340,L-4284951,00.html|title=Jihadists say launched border attack as 'revenge over film'|date=2012-09-23|work=Ynetnews|access-date=2018-10-30|language=en}}</ref>
*[[2013]] &ndash; [[Al-Shabaab (militant group)|Al-Shabaab]] Islamic militants [[Westgate shopping mall attack|attack the Westgate shopping mall]] in [[Kenya]], killing at least 67 people.
*[[2015]] &ndash; [[AdventHealth#Lawsuits|Adventist Health System]] agreed to pay $118.7 million to settle allegations of [[fraud]]. It was the largest a hospital network has ever paid.<ref>{{Cite web|url=https://www.reuters.com/article/adventist-health-whistleblower-settlemen/adventist-health-system-to-pay-118-mln-to-settle-fraud-claims-idUSL1N11R2DK20150921|title=Adventist Health System to pay $118 mln to settle fraud claims|last=Pierson|first=Brendan|date=2015-09-21|website=[[Reuters]]|access-date=2023-10-27}}</ref>
*[[2018]] &ndash; LGBT rights activist [[Zak Kostopoulos]] is beaten to death on a busy street in Athens<ref name=fa>{{cite web |title=The Killing of Zak Kostopoulos |url=https://forensic-architecture.org/investigation/the-killing-of-zak-kostopoulos |website=[[Forensic Architecture]] |access-date=7 October 2021}}</ref>
*[[2019]] &ndash; A 5.6 M<sub>w</sub> [[2019 Albania earthquake|earthquake]] shakes the [[Albania]]n port of [[Durrës]]. Forty-nine people are injured in the capital, [[Tirana]].<ref>{{citation|website=Global News|title=5.6 magnitude earthquake strikes Albanian capital city |url=https://globalnews.ca/news/5933837/earthquake-albania-tirana/|date=Sep 21, 2019|access-date=Sep 21, 2019}}</ref>