Editing September 17 (section)

===1901–present===
*[[1901]] &ndash; [[Second Boer War]]: A Boer column defeats a British force at the [[Battle of Blood River Poort]].
*  1901   &ndash; Second Boer War: Boers capture a squadron of the 17th Lancers at the [[Battle of Elands River (1901)|Battle of Elands River]].
*[[1908]] &ndash; The Wright Flyer flown by Orville Wright, with Lieutenant [[Thomas Selfridge]] as passenger, crashes, killing Selfridge, who becomes the first airplane fatality.
*[[1914]] &ndash; [[Andrew Fisher]] becomes Prime Minister of Australia for the third time.
*  1914   &ndash; [[World War I]]: The [[Race to the Sea]] begins.
*[[1916]] &ndash; World War I: [[Manfred von Richthofen]] ("The Red Baron"), a flying ace of the German Luftstreitkräfte, wins his first aerial combat near Cambrai, France.
*[[1920]] &ndash; The [[National Football League]] is organized as the American Professional Football Association in Canton, Ohio.<ref>{{cite web|url=http://www.profootballhof.com/news/sept-17-1920-the-founding-of-the-nfl/|title=Sept. 17, 1920 – The Founding of the NFL – Pro Football Hall of Fame Official Site|website=www.profootballhof.com}}</ref><ref>{{cite web|url=http://www.espn.com/nfl/story/_/id/13673330/nfl-was-born-smoky-ohio-car-showroom-95-years-ago-today|title=NFL born amid cars, beer, cigars 95 years ago|date=17 September 2015}}</ref>
*[[1924]] &ndash; The [[Border Protection Corps]] is established in the Second Polish Republic for the defence of the eastern border against armed Soviet raids and local bandits. 
*[[1928]] &ndash; The [[1928 Okeechobee hurricane|Okeechobee hurricane]] strikes southeastern Florida, killing more than 2,500 people.
*[[1930]] &ndash; The Kurdish [[Ararat rebellion]] is suppressed by the Turks.
*[[1932]] &ndash; A speech by [[Laureano Gómez]] leads to the escalation of the [[Leticia Incident]].
*[[1935]] &ndash; The [[Niagara Gorge Railroad]] ceases operations after a rockslide.<ref>{{cite web|url=http://www.niagarafrontier.com/greatgorge.html|title=Niagara Falls – The Great Gorge Route|website=www.niagarafrontier.com}}</ref>
*[[1939]] &ndash; [[World War II]]: The [[Soviet invasion of Poland]] begins.
*  1939   &ndash; World War II: {{ship|German submarine|U-29|1936|6}} sinks the British aircraft carrier {{HMS|Courageous|50|6}}.
*[[1940]] &ndash; World War II: Due to setbacks in the [[Battle of Britain]] and approaching autumn weather, Hitler postpones [[Operation Sea Lion]].
*[[1941]] &ndash; World War II: A decree of the Soviet State Committee of Defense restores [[Vsevobuch|compulsory military training]].
*  1941   &ndash; World War II: Soviet forces enter Tehran during the [[Anglo-Soviet invasion of Iran]].
*[[1944]] &ndash; World War II: Allied airborne troops parachute into the Netherlands as the "Market" half of [[Operation Market Garden]] and British [[XXX Corps (United Kingdom)|XXX Corps]] advances into the Netherlands as the "Garden" half of the Operation.
*  1944   &ndash; World War II: Soviet troops launch the [[Tallinn Offensive]] against Germany and [[Estonia in World War II|pro-independence Estonian units]].
*  1944   &ndash; World War II: German forces are attacked by the Allies in the [[Battle of San Marino]].
*[[1948]] &ndash; The [[Lehi (group)|Lehi]] (also known as the Stern gang) assassinates Count [[Folke Bernadotte]], who was appointed by the United Nations to mediate between the Arab nations and Israel.
*  1948   &ndash; The [[Nizam of Hyderabad]] surrenders his sovereignty over the [[Hyderabad State]] and joins the [[Dominion of India|Indian Union]].
*[[1949]] &ndash; The Canadian steamship {{SS|Noronic}} burns in [[Toronto Harbour]] with the loss of over 118 lives.
* [[1950]] &#x2013; The [[People's Liberation Army Air Force Airborne Corps]] (Then known as the PLAAF 1st Ground Forces Brigade) is founded.<ref name=":1">{{Cite web |date=2019-10-11 |title=从热播的空军题材电视剧中，看真实的中国空军故事 |url=https://www.thepaper.cn/newsDetail_forward_4653227 |access-date=2025-05-29 |website=The Paper}}</ref>
*[[1961]] &ndash; The world's first retractable roof stadium, the [[Civic Arena (Pittsburgh)|Civic Arena]], opens in Pittsburgh, Pennsylvania.
*  1961   &ndash; [[Northwest Orient Airlines Flight 706]] crashes during takeoff from [[O'Hare International Airport]] in [[Chicago]], [[Illinois]], killing all 37 people on board.<ref>{{Cite web|last=Ranter|first=Harro|title=ASN Aircraft accident Lockheed L-188C Electra N137US Chicago-O'Hare International Airport, IL (ORD)|url=https://aviation-safety.net/database/record.php?id=19610917-3|access-date=2021-09-16|website=aviation-safety.net|publisher=[[Aviation Safety Network]]}}</ref>
*[[1965]] &ndash; The [[Battle of Chawinda]] is fought between Pakistan and India.<ref>{{cite book|author1=B. C. Chakravorty|author2=D. Phil|editor1-last=Prasad|editor1-first=S. N.|title=History of the Indo-Pak War, 1965|date=1992|publisher=History Division, Ministry of Defence, Government of India|pages=212–220|url=http://www.bharat-rakshak.com/ARMY/History/1965War/PDF/1965Chapter07.pdf|access-date=12 January 2015|chapter=Chapter 7: Operations in Sialkot Sector}}</ref>
*[[1974]] &ndash; [[Bangladesh]], [[Grenada]] and [[Guinea-Bissau]] join the United Nations.
*[[1976]] &ndash; The [[Space Shuttle Enterprise|Space Shuttle ''Enterprise'']] is unveiled by NASA. 
*[[1978]] &ndash; The [[Camp David Accords]] are signed by Israel and Egypt.
*[[1980]] &ndash; After weeks of strikes at the [[Lenin Shipyard]] in Gdańsk, Poland, the nationwide independent trade union [[Solidarity (Polish trade union)|Solidarity]] is established. 
*  1980   &ndash; Former Nicaraguan President [[Anastasio Somoza Debayle]] is killed in Asunción, Paraguay.
*[[1983]] &ndash; [[Vanessa Williams]] becomes the first black Miss America.
*[[1991]] &ndash; [[Estonia]], [[North Korea]], [[South Korea]], [[Latvia]], [[Lithuania]], the [[Marshall Islands]] and [[Federated States of Micronesia|Micronesia]] join the United Nations.
*  1991   &ndash; The first version of the [[Linux]] kernel (0.01) is released to the Internet.
*[[1992]] &ndash; An Iranian Kurdish leader and his two joiners are [[Mykonos restaurant assassinations|assassinated by political militants]] in Berlin.
*[[2001]] &ndash; The [[New York Stock Exchange]] reopens for trading after the [[September 11 attacks]], the longest closure since the [[Great Depression]].
*2001 &ndash; [[George W. Bush]], [[president of the United States]], delivers [[remarks at the Islamic Center of Washington]] praising Muslim Americans and condemning [[Islamophobia in the United States|Islamophobia]] in the [[aftermath of the September 11 attacks]].<ref>{{Cite news |last=Beauchamp |first=Zack |date=September 22, 2015 |title=Today's GOP Should Take Lessons on Islam from George W. Bush |url=https://www.vox.com/2015/9/22/9371313/republicans-islam-bush |work=[[Vox (website)|Vox]]}}</ref>
*[[2006]] &ndash; [[Fourpeaked Mountain]] in Alaska erupts, marking the first eruption for the volcano in at least 10,000 years. 
*  2006   &ndash; An audio tape of [[Őszöd speech|a private speech]] by Hungarian Prime Minister Ferenc Gyurcsány is leaked to the public, in which he confessed that his Hungarian Socialist Party had lied to win the 2006 election, sparking [[2006 protests in Hungary|widespread protests]] across the country.
*[[2011]] &ndash; [[Occupy Wall Street]] movement begins in Zuccotti Park, New York City.
*[[2013]] &ndash; ''[[Grand Theft Auto V]]'' earns more than half a billion dollars on its first day of release.<ref>{{Cite web|url=http://www.guinnessworldrecords.com/news/2013/10/confirmed-grand-theft-auto-breaks-six-sales-world-records-51900|title=Confirmed: Grand Theft Auto 5 breaks 6 sales world records|date=2013-10-08|website=Guinness World Records|language=en-GB|access-date=2019-03-28}}</ref>
*[[2016]] &ndash; [[2016 New York and New Jersey bombings|Two bombs explode]] in Seaside Park, New Jersey, and Manhattan. Thirty-one people are injured in the Manhattan bombing.
*[[2018]] &ndash; A Russian reconnaissance aircraft carrying 15 people on board is [[Syria missile strikes (September 2018)|brought down]] by a Syrian surface-to-air missile over the Mediterranean Sea.<ref>{{cite web|url=https://www.cnbc.com/2018/09/18/russia-blames-israel-for-shooting-down-reconnaissance-aircraft-off-syria.html|title=Russia blames Israel for shooting down reconnaissance aircraft off Syria|website=CNBC|date=18 September 2018 |access-date=2018-09-19}}</ref>