Editing September 20 (section)

===1901–present===
*[[1911]] &ndash; The White Star Line's {{RMS|Olympic}} collides with the British warship {{HMS|Hawke|1891|6}}.<ref>{{Cite web|url=https://www.britannica.com/topic/Olympic|title=Olympic &#124; British ship|website=Encyclopedia Britannica|access-date=November 23, 2020}}</ref><ref>{{cite web |title=Collision Between H.M.S. ''Hawke'' and R.M.S. ''Olympic'' |url=https://www.usni.org/magazines/proceedings/1911/december/collision-between-h-ms-hawke-and-r-m-s-olympic |website=U.S. Naval Institute |language=en |date=December 1, 1911}}{{subscription required|s}}</ref>
*[[1920]] &ndash; [[Irish War of Independence]]: British police known as "[[Black and Tans]]" [[Sack of Balbriggan|burn the town of Balbriggan]] and kill two local men in revenge for an [[Irish Republican Army (1919–1922)|IRA]] assassination.<ref>Leeson, D.M. ''The Black and Tans: British Police and Auxiliaries in the Irish War of Independence, 1920–1921''. Oxford University Press, 2011. pp. 25–26 {{ISBN?}}</ref>
*[[1941]] &ndash; [[The Holocaust in Lithuania]]: Lithuanian Nazis and local police begin a mass execution of 403 Jews in [[Nemenčinė]].<ref>{{cite book|author1=Josifas Levinsonas|author2=Joseph Levinson|title=The Shoah (Holocaust) in Lithuania|url=https://books.google.com/books?id=-bdtAAAAMAAJ|year=2006|publisher=Vilna Gaon Jewish State Museum|isbn=978-5-415-01902-1|page=119}}</ref> 
*[[1946]] &ndash; The first [[Cannes Film Festival]] is held, having been delayed for seven years due to World War II.<ref>{{cite book|author=Chris Gore|title=The Ultimate Film Festival Survival Guide|url=https://books.google.com/books?id=HthkAAAAMAAJ|year=2001|publisher=IFILM Pub.|isbn=978-1-58065-032-8|page=225}}</ref>
*  1946   &ndash; Six days after a [[1946 Faroese independence referendum|referendum]], King Christian X of Denmark annuls the declaration of independence of the Faroe Islands. 
*[[1954]] &ndash; The [[Moomin comic strips|''Moomin'' comics]], created by [[Tove Jansson]] and [[Lars Jansson (cartoonist)|Lars Jansson]], is published internationally in the London newspaper ''[[The Evening News (London newspaper)|The Evening News]]''.<ref>{{cite web|url=https://www.moomin.com/en/blog/moomin-comic-book/#2ec0a6bd|title=The Moomin comic strip turns 70 and is released in gorgeous softcover!|website=Moomin.com|date=3 July 2024|access-date=23 December 2024}}</ref>
*[[1955]] &ndash; The [[Treaty on Relations between the USSR and the GDR]] is signed.
*[[1961]] &ndash; Greek general [[Konstantinos Dovas]] becomes Prime Minister of Greece.<ref>{{Cite web|url=http://zarate.eu/greece.htm|title=Political Leaders: Greece|website=zarate.eu|access-date=November 23, 2020}}</ref>
*[[1962]] &ndash; [[James Meredith]], an African American, is temporarily barred from entering the University of Mississippi.
*[[1965]] &ndash; Following the [[Battle of Burki]], the Indian Army captures Dograi in during the Indo-Pakistani War of 1965.
*[[1967]] &ndash; The Cunard Liner ''[[Queen Elizabeth 2]]'' is launched in Clydebank, Scotland.<ref>{{Cite web|url=https://www.sundaypost.com/fp/launched-at-clydebank-the-magnificent-qe2-ruled-the-waves/|title=Launched at Clydebank on this day 50 years ago, the magnificent QE2 ruled the waves |publisher=The Sunday Post|first=|last=|date=September 19, 2017 |access-date=November 23, 2020}}</ref>
*[[1971]] &ndash; Having weakened after making landfall in Nicaragua the previous day, [[Hurricane Irene–Olivia|Hurricane Irene]] regains enough strength to be renamed Hurricane Olivia, making it the first known hurricane to cross from the Atlantic Ocean into the Pacific.
*[[1973]] &ndash; Billie Jean King beats Bobby Riggs in the [[Battle of the Sexes (tennis)|Battle of the Sexes]] tennis match at the Houston Astrodome.<ref>{{Cite web|url=https://www.tennis.com/pro-game/2015/04/1973-billie-jean-king-beats-bobby-riggs-battle-sexes/54497/|title=1973: Billie Jean King beats Bobby Riggs in the Battle of the Sexes|website=Tennis.com|access-date=November 23, 2020}}</ref>
*  1973   &ndash; Singer [[Jim Croce]], songwriter and musician [[Maury Muehleisen]] and four others die when their light aircraft crashes shortly after takeoff from Natchitoches Regional Airport in Louisiana.<ref>{{Cite web|url=https://nightswithalicecooper.com/2020/09/18/remembering-jim-croce/|title=Remembering Jim Croce|website=nightswithalicecooper.com|access-date=November 23, 2020|date=September 18, 2020|archive-date=August 30, 2023|archive-url=https://web.archive.org/web/20230830180953/https://nightswithalicecooper.com/2020/09/18/remembering-jim-croce/|url-status=usurped}}</ref>
*[[1977]] &ndash; [[Vietnam]] is admitted to the United Nations.<ref>{{Cite news|url=https://www.nytimes.com/1977/09/21/archives/vietnam-is-admitted-to-the-un-as-32d-general-assembly-opens.html|title=Vietnam Is Admitted to the U.N. As 32d General Assembly Opens (Published 1977)|newspaper=The New York Times |date=September 21, 1977|access-date=November 23, 2020}}</ref>
*[[1979]] &ndash; A French-supported ''[[1979 Central African Republic coup d'état|coup d'état]]'' in the [[Central African Empire]] overthrows Emperor Bokassa I.<ref>{{Cite news|url=https://www.nytimes.com/1979/09/21/archives/bokassa-is-reported-overthrown-in-coup-in-central-african-empire.html|title=Bokassa Is Reported Overthrown In Coup in Central African Empire |newspaper=The New York Times |date=September 21, 1979|access-date=November 23, 2020}}</ref>
*[[1982]] &ndash; [[1982 NFL season|NFL season]]: American football players in the National Football League begin a 57-day strike.<ref>{{cite book|author=Commerce Clearing House|title=Tax Court Memorandum Decisions|url=https://books.google.com/books?id=WQlEAQAAIAAJ|year=1997|publisher=Commerce Clearing House|page=2660}}</ref>
*[[1984]] &ndash; A suicide bomber in a car [[1984 United States embassy annex bombing in Beirut|attacks]] the U.S. embassy in Beirut, Lebanon, killing twenty-two people.<ref>{{Cite news|url=https://www.nytimes.com/1984/09/21/world/23-die-including-2-americans-terrorist-car-bomb-attack-us-embassy-beirut-blast.html|title=23 Die, Including 2 Americans, In Terrorist Car Bomb Attack On The U.S. Embassy At Beirut; Blast Kills Driver|first1=John|last1=Kifner|newspaper=The New York Times |date=September 21, 1984|access-date=November 23, 2020}}</ref>
*[[1989]] &ndash; [[USAir Flight 5050]] crashes into [[Bowery Bay]] during a [[rejected takeoff]] from [[LaGuardia Airport]], killing two people.<ref>{{Cite web |last=Ranter |first=Harro |title=ASN Aircraft accident Boeing 737-401 N416US New York-La Guardia Airport, NY (LGA) |url=https://aviation-safety.net/database/record.php?id=19890920-0 |access-date=September 19, 2022 |website=aviation-safety.net}}</ref>
*[[1990]] &ndash; [[South Ossetia]] declares its independence from Georgia.<ref>{{Cite web|url=https://uca.edu/politicalscience/dadm-project/europerussiacentral-asia-region/georgiasouth-ossetia-1990-present/|title=38. Georgia/South Ossetia (1990–present)|website=uca.edu|access-date=November 23, 2020}}</ref>
*[[2000]] &ndash; The United Kingdom's MI6 Secret Intelligence Service building is [[2000 MI6 attack|attacked]] by individuals using a Russian-built RPG-22 anti-tank missile.<ref>{{Cite news|url=https://www.theguardian.com/uk/2000/sep/21/rebeccaallison.jamiewilson|title=Blasts rock MI6 headquarters|first1=Jamie|last1=Wilson|first2=Rebecca|last2=Allison|first3=Steven|last3=Morris|first4=Vikram|last4=Dodd|newspaper=The Guardian |date=September 21, 2000|access-date=November 23, 2020|via=www.theguardian.com}}</ref>
*[[2001]] &ndash; In an address to a joint session of Congress and the American people, U.S. President George W. Bush declares a "[[War on Terror]]".<ref>{{Cite web|url=https://georgewbush-whitehouse.archives.gov/news/releases/2001/09/20010920-8.html|title=President Declares 'Freedom at War with Fear'|website=georgewbush-whitehouse.archives.gov|access-date=November 26, 2019}}</ref><ref>{{cite news |title=Transcript of President Bush's address |work=CNN |date=September 20, 2001 |url=http://edition.cnn.com/2001/US/09/20/gen.bush.transcript/ |access-date=September 20, 2021 |archive-date=February 25, 2008 |archive-url=https://web.archive.org/web/20080225062850/http://edition.cnn.com/2001/US/09/20/gen.bush.transcript/ |url-status=dead }}</ref>
*[[2003]] &ndash; [[2003 Maldives civil unrest|Civil unrest in the Maldives]] breaks out after a prisoner is killed by guards.<ref>{{Cite web|url=https://www.abc.net.au/news/2003-09-21/riots-break-out-in-maldives-over-prisoners-death/1481580|title=Riots break out in Maldives over prisoner's death|date=September 20, 2003|website=www.abc.net.au|access-date=November 23, 2020}}</ref>
*[[2007]] &ndash; Between 15,000 and 20,000 protesters march on Jena, Louisiana, United States, in support of [[Jena Six|six black youths]] who had been convicted of assaulting a white classmate.<ref>{{Cite news|url=https://www.nytimes.com/2007/09/21/us/21cnd-jena.html|title=Thousands Protest Arrests of 6 Blacks in Jena, La.|first=Richard G.|last=Jones|newspaper=The New York Times |date=September 21, 2007|access-date=November 23, 2020}}</ref>
*[[2008]] &ndash; A dump truck full of explosives [[Islamabad Marriott Hotel bombing|detonates]] in front of the Marriott hotel in Islamabad, Pakistan, killing 54 people and injuring 266 others.<ref>[https://www.uk.mobile.reuters.com/article/amp/idUSLK18396120080922 Reuters]{{dead link|date=July 2021|bot=medic}}{{cbignore|bot=medic}}</ref>
*[[2011]] &ndash; The United States military ends its "[[don't ask, don't tell]]" policy, allowing gay men and women to serve openly for the first time.<ref>{{Cite news|url=https://www.bbc.co.uk/news/world-us-canada-14981082|title='Don't ask, don't tell' ban on gays in US military ends|work=BBC News |date=September 20, 2011|access-date=November 23, 2020}}</ref>
*[[2017]] &ndash; [[Hurricane Maria]] makes landfall in Puerto Rico as a powerful [[Category 4 hurricane|Category&nbsp;4 hurricane]], resulting in 2,975 deaths, US$90&nbsp;billion in damage, and a major humanitarian crisis.<ref>{{Cite news|url=https://www.bbc.com/news/world-us-canada-45338080|title=Puerto Rico increases Hurricane Maria death toll to 2,975|work=BBC News |date=August 28, 2018|access-date=November 23, 2020}}</ref><ref>{{Cite web|url=https://money.cnn.com/2017/09/28/news/economy/puerto-rico-hurricane-maria-damage-estimate/index.html|title=Hurricane Maria could be a $95 billion storm for Puerto Rico|first=Jill|last=Disis|date=September 28, 2017|website=CNNMoney|access-date=November 23, 2020}}</ref>
*[[2018]] &ndash; At least 161 people die after a ferry capsizes close to the pier on [[Ukara Island]] in [[Lake Victoria]], [[Tanzania]].<ref>{{cite web|url=https://www.scmp.com/news/world/africa/article/2165320/captain-capsized-ferry-lake-victoria-arrested-after-order-tanzania|title=Captain of capsized ferry on Lake Victoria arrested after order from Tanzania president|date=September 22, 2018}}</ref>
*[[2019]] &ndash; Roughly four&nbsp;million people, mostly students, [[September 2019 climate strikes|demonstrate across the world to address climate change]].<ref>{{cite web|url=https://www.theguardian.com/environment/2019/sep/26/greta-thunberg-teenager-on-a-global-mission-to-make-a-difference|title=Greta Thunberg: teenager on a global mission to 'make a difference'|work=[[The Guardian]]|last=Belam|first=Martin|date=September 26, 2019|access-date=October 6, 2019}}</ref><ref name="Vox 350">{{cite web |url=https://www.vox.com/energy-and-environment/2019/9/20/20876143/climate-strike-2019-september-20-crowd-estimate |title=How big was the global climate strike? 4 million people, activists estimate. |work=[[Vox (website)|Vox]] |author-last1=Barclay |author-first1=Eliza |author-last2=Resnick |author-first2=Brian |date=September 20, 2019 |access-date=September 21, 2019 |archive-url=https://web.archive.org/web/20190921012020/https://www.vox.com/energy-and-environment/2019/9/20/20876143/climate-strike-2019-september-20-crowd-estimate |archive-date=September 21, 2019 |url-status=live}}</ref> Sixteen-year-old [[Greta Thunberg]] from Sweden leads the demonstration in New York City.<ref>{{citation|website=Mother Jones|date=Sep 20, 2019|access-date=Sep 20, 2019|title=You've Got to See These Inspiring Photos to Understand the Scale of Today's Global Climate Strikes|author=Abigail Weinberg |url=https://www.motherjones.com/environment/2019/09/youve-got-to-see-these-inspiring-photos-to-understand-the-scale-of-todays-global-climate-strikes/}}</ref><ref>{{citation|website=NPR|date=Sep 20, 2019|access-date=Sep 20, 2019|title=A Rising Generation Asserts Itself On Climate Change|author=Jeff Brady|url=https://www.npr.org/2019/09/20/761916356/global-youth-climate-strike-expected-to-draw-large-crowds}}</ref><ref>{{citation |website=Politico|date=Sep 20, 2019|title=Climate strikes sweep the globe|url=https://www.politico.eu/article/climate-strikes-sweep-the-globe/|author=Paola Tamma}}</ref>