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Use only ONE image at a time
Use only ONE image at a time
<gallery>
<gallery>
Image:Jan Sobieski.jpg|John III Sobieski, King of Poland
File:Jan Sobieski.jpg|John III Sobieski, King of Poland
File:Schultz John III Sobieski.jpg|John III Sobieski, King of Poland
Image:Boat on manchester ship canal.jpg|A boat on the Manchester Ship Canal
File:Boat on manchester ship canal.jpg|A boat on the Manchester Ship Canal
Image:Leopold-loeb.jpg|Leopold and Loeb
File:MadridSkylitzesFol100vDetail.jpg|Capture of Syracuse
Image:Charles Lindbergh detail 3c16807u.jpg|Charles Lindbergh
Image:Soeharto cropped.jpg|Suharto (requires undeletion)
File:Soeharto.jpg|Suharto
File:Rioters outside San Francisco City Hall May 21 1979.jpg|Rioters outside San Francisco City Hall on May 21, 1979
Image:Soeharto.jpg|Suharto
File:WcbbustCBarton2.jpg|Clara Barton
File:WcbbustCBarton2.jpg|Clara Barton
File:Kingda Ka tower.jpg|Kingda Ka roller coaster
File:Partially-reflected-plutonium-sphere.jpeg|Recreation of the Manhattan Project "demon core"
</gallery>
</gallery>


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!Reason
!Reason
|-
|-
| '''[[Navy Day]]'''<!--[[Navy Day (Chile)]] not linked, stub--> in Chile;
|[[1758]] – [[French and Indian War]]: Ten-year-old '''[[Mary Campbell (colonial settler)|Mary Campbell]]''' was taken captive from her [[Pennsylvania]] home by members of the [[Indigenous peoples of the Americas|Native American]] group [[Lenape]], believed to have been the [[White people|first white child]] to travel to the [[Connecticut Western Reserve]].
| refimprove
|-
| [[996]] – [[Pope Gregory V]] crowned '''[[Otto III, Holy Roman Emperor|{{nowrap|Otto III}}]]''' as [[Holy Roman Emperor]].
| refimprove section
|-
| [[1403]] – King [[Henry III of Castile|Henry&nbsp;III]] of [[Crown of Castile|Castile]] '''[[Timurid relations with Europe|sent an embassy]]''' to the [[Timurid Empire|Timurid]] court to discuss a potential alliance against the [[Ottoman Empire]].
| Too much uncited
|-
| [[1674]] – '''[[John III Sobieski|{{nowrap|John III}} Sobieski]]''', elected by the [[szlachta]], became the monarch of the [[Polish–Lithuanian Commonwealth]].
| unreferenced section
|-
|[[1758]] – [[French and Indian War]]: Ten-year-old '''[[Mary Campbell (colonial settler)|Mary Campbell]]''', taken captive from her [[Pennsylvania]] home by members of the [[Indigenous peoples of the Americas|Native American]] group [[Lenape]], likely became the [[White people|first white child]] to travel to the [[Connecticut Western Reserve]].
|refimprove, lead too short
|refimprove, lead too short
|-
|-
| [[1863]] – The '''[[Seventh-day Adventist Church]]''', a [[Protestantism|Protestant]] denomination distinguished by its emphasis on the imminent [[Second Coming|second coming (Advent)]] of [[Jesus]], was founded in [[Battle Creek, Michigan]], U.S.
|[[1879]] – [[War of the Pacific]]: Two [[Navy of Peru|Peruvian]] [[Ironclad warship|ironclad]]s led by [[Miguel Grau Seminario]] attempted to lift the [[blockade]] of [[Iquique]] by [[Chilean Navy|Chilean battleships]] under [[Arturo Prat]] at the '''[[Battle of Iquique]]'''.
|unsourced sections
|-
|[[1879]] – [[War of the Pacific]]: Two Peruvian [[Ironclad warship|ironclad]]s led by [[Miguel Grau Seminario]] attempted to lift the blockade of [[Iquique]] by Chilean battleships under [[Arturo Prat]] at the '''[[Battle of Iquique]]'''.
|refimprove
|refimprove
|-
|-
| [[1881]] – '''[[Clara Barton]]''' founded the [[American Red Cross]] in [[Washington, D.C.]]
|[[1924]] – [[University of Chicago]] students '''[[Leopold and Loeb|Richard Loeb and Nathan Leopold, Jr.]]''' murdered a 14-year-old boy in a [[thrill killing]] out a desire to commit a [[perfect crime]].
|refimprove section
| refimprove section
|-
|-
| [[1904]] – The '''[[FIFA|Fédération Internationale de Football Association]]''', the international [[Sports governing body|sport governing body]] of association football, was founded in Paris.
|[[1927]] – Aboard the '''''[[Spirit of St. Louis]]''''', [[United States|American]] aviator [[Charles Lindbergh]] completed the first solo non-stop [[transatlantic flight]], flying from [[Roosevelt Field, New York|Roosevelt Field]] near [[New York City]] to [[Paris - Le Bourget Airport|Le Bourget Airport]] near [[Paris]].
|refimprove section
| refimprove section
|-
|-
| [[1917]] – '''[[Great Atlanta fire of 1917|A fire]]''' broke out in [[Atlanta]], destroying several thousand buildings and displacing over 10,000 residents.
|[[1991]] – Former [[Prime Minister of India]] [[Rajiv Gandhi]] '''[[Assassination of Rajiv Gandhi|was assassinated]]''' by a [[suicide bomber]] in [[Sriperumbudur]] in [[Tamil Nadu]].
| refimprove section
|Tagged with {{tl|POV}}
|-
|-
| [[1939]] – [[George VI|King {{nowrap|George VI}}]] and [[Queen Elizabeth The Queen Mother|Queen Elizabeth]] dedicated Canada's '''[[National War Memorial (Canada)|National War Memorial]]''' in [[Ottawa]].\
|[[2006]] – The '''[[Montenegrin independence referendum, 2006|Montenegrin independence referendum]]''' was held in [[Montenegro]], with 55.5 percent of the voters favouring independence from the [[Serbia and Montenegro|State Union of Serbia and Montenegro]].
|refimprove section
|unsourced section
|-
|* [[1951]] – The '''[[9th Street Art Exhibition]]''' opened in New York City, marking the formal debut of the [[abstract expressionism]] movement.
|"formal debut" not supported in article
|-
| [[1979]] – '''[[White Night riots|Riots erupted]]''' in [[San Francisco]]<!-- ''(rioters pictured)''--> after former Supervisor [[Dan White]] was only sentenced for [[voluntary manslaughter]] for the [[Moscone–Milk assassinations|assassinations]] of Mayor [[George Moscone]] and openly [[homosexuality|gay]] Supervisor [[Harvey Milk]].
| misleading section
|-
| [[1981]] – The [[Government of Italy|Italian government]] released the membership list of '''[[Propaganda Due]]''', an illegal pseudo-[[Freemasonry|Masonic lodge]] that had been implicated in numerous Italian crimes and mysteries.
| refimprove section
|-
| [[1982]] – [[Falklands War]]: The United Kingdom began '''[[Battle of San Carlos (1982)|a major amphibious assault]]''' on the shores of [[San Carlos Water]].
| refimprove
|-
| [[1996]] – [[Algerian Civil War]]: The remains of seven French [[Trappists|Trappist]] monks who had been '''[[Murder of the monks of Tibhirine|kidnapped]]''' in Algeria nearly two months earlier were found.
| most important part uses an unreliable source
|-
| [[2006]] – The '''[[2006 Montenegrin independence referendum|Montenegrin independence referendum]]''' was held in [[Montenegro]], with 55.5 percent of the voters favouring independence from the [[Serbia and Montenegro|State Union of Serbia and Montenegro]].
| unreferenced section
|-
| [[2010]] – The [[Japan Aerospace Exploration Agency]] launched '''[[IKAROS]]''', the first spacecraft to successfully demonstrate [[solar sail]] technology in interplanetary space.
| featured on [[Wikipedia:Selected anniversaries/December 8|December 8]]
|-
| '''[[Mary Robinson]]'''<!--Irish president--> |b|1944|
| Orange banner

|}
|}


==Eligible==
==Eligible==
* [[878]] – [[Arab–Byzantine wars]]: The city of [[Syracuse, Sicily|Syracuse]] '''[[Siege of Syracuse (877–878)|was captured]]''' by the [[Aghlabids]] ''(pictured)'' as part of the [[Muslim conquest of Sicily]].
{{*mp}} [[1894]] – The '''[[Manchester Ship Canal]]''', linking [[Greater Manchester]] in [[North West England]] to the [[Irish Sea]], officially opened, becoming the largest navigation canal in the world at the time.
* [[1703]] – English writer [[Daniel Defoe]] was imprisoned for [[seditious libel]] after publishing '''[[The Shortest Way with the Dissenters|a pamphlet]]''' that was perceived to satirise the [[Tory]] publications about [[English Dissenters|Dissenters]].
{{*mp}} [[1904]] – The '''[[FIFA|Fédération Internationale de Football Association]]''', the international [[sport governing body]] of [[association football]], was founded in [[Paris]].
* [[1851]] – The [[Congress of Colombia]] passed a law abolishing '''[[Slavery in Colombia|slavery in the country]]''', to take effect at the beginning of the new year.
{{*mp}} [[1979]] – Riots '''[[White Night riots|erupted]]''' in [[San Francisco]] after former [[San Francisco Board of Supervisors|Supervisor]] [[Dan White]] was only sentenced for [[voluntary manslaughter]] for the [[Moscone–Milk assassinations|assassinations]] of [[Mayor of San Francisco|Mayor]] [[George Moscone]] and openly [[homosexual|gay]] Supervisor [[Harvey Milk]].
{{*mp}} [[1982]] – [[Falklands War]]: The [[United Kingdom]] began '''[[Battle of San Carlos (1982)|a major amphibious assault]]''' on the shores of [[San Carlos Water]].
* [[1856]] – A crowd of about 800 pro-slavery Americans '''[[Sacking of Lawrence|ransacked]]''' the town of [[Lawrence, Kansas]].
* [[1911]] – Mexican president [[Porfirio Díaz]] and the revolutionary [[Francisco I. Madero]] signed the '''[[Treaty of Ciudad Juárez]]''' to end hostilities between each other's forces, concluding the initial phase of the [[Mexican Revolution]].
* [[1917]] – The '''[[Commonwealth War Graves Commission|Imperial War Graves Commission]]''' was established by [[royal charter]] to mark, record and maintain the graves and places of commemoration of [[British Empire]] military forces.
* [[1927]] – Aboard the ''[[Spirit of St. Louis|Spirit of St.&nbsp;Louis]]'', American aviator '''[[Charles Lindbergh]]''' ''(pictured)'' completed the first solo non-stop [[transatlantic flight]], flying from [[Roosevelt Field (airport)|Roosevelt Field]] near New York City to [[Paris–Le Bourget Airport]].
* [[1946]] – While working with a mass of [[plutonium]] known as the '''[[demon core]]'''<!-- ''(recreation pictured)''-->, [[Manhattan Project]] physicist '''[[Louis Slotin]]''' accidentally exposed himself to a lethal dose of [[Ionizing radiation|hard radiation]]<!--, making him the second victim of a [[criticality accident]] in history-->.
* [[1991]] – Former Indian prime minister '''[[Rajiv Gandhi]]''' was [[Assassination of Rajiv Gandhi|assassinated by a suicide bomber]]<!--not bold, refimprove section--> in [[Sriperumbudur]], Tamil Nadu.
* [[1998]] – Indonesian president '''[[Suharto]]'''<!-- ''(pictured)''--> resigned after [[Fall of Suharto|a collapse of support for his presidency]]<!--not bold, refimprove section--> amid economic and political crises, ending 32 years in power.
* [[2005]] – The world's tallest [[roller coaster]], '''[[Kingda Ka]]'''<!-- ''(pictured)''-->, opened at [[Six Flags Great Adventure]] in [[Jackson, New Jersey]], U.S.
* [[2015]] – [[Islamic State]] militants entered the ancient city of '''[[Palmyra]]'''.
* Born/died: | '''[[Olaf the Black]]'''<!--Scottish king--> |d|1237| '''[[Thomas Howard, 2nd Duke of Norfolk]]'''<!--English soldier/politician--> |d|1524| '''[[Luis Fajardo (Spanish Navy officer)|Luis Fajardo]]''' |d|1617| '''[[Harriet Sutherland-Leveson-Gower, Duchess of Sutherland]]'''<!--English noblewoman--> |b|1806| '''[[Rudolf Koller]]'''<!--Swiss painter--> |b|1828| '''[[Ella Stewart Udall]]'''<!--American telegraphist--> |b|1855| '''[[Anne Walter Fearn]]'''<!--American physician--> |b|1867| '''[[Tudor Arghezi]]'''<!--Romanian writer, male--> |b|1880| '''[[Leonidas Vasilikopoulos]]'''<!--Greek admiral--> |b|1932| '''[[Al Franken]]'''<!--American comedian/politician--> |b|1951| '''[[Nadine Dorries]]'''<!--English politician--> |b|1957
{{divhide|end}}
{{divhide|end}}

</noinclude>
</noinclude>
'''[[May 21]]''': '''[[Armed Forces Day]]''' in the [[United States]] ([[2011]]); '''[[Navy Day]]''' in [[Chile]]
'''[[May 21]]''': '''[[World Day for Cultural Diversity for Dialogue and Development]]'''
{{main page image/OTD|File:Bundesarchiv Bild 102-00652, Richard Loeb und Nathan Leopold.jpg|Richard Loeb ''(left)'' and Nathan Leopold ''(right)''
<div style="float:right;margin-left:0.5em">
}}
[[Image:SiemiginowskiJerzy.1693.PortretJanaIIISobieskiego.jpg|John III Sobieski, King of Poland|100x100px]]
* [[1138]] – [[Crusades|The Crusades]]: The '''[[siege of Shaizar]]''' ended, and the Emir of Shaizar became a vassal of the [[Byzantine Empire]].
</div>
* [[1864]] – [[American Civil War]]: The inconclusive '''[[Battle of Spotsylvania Court House]]''' in [[Virginia]] ended with combined [[Union (American Civil War)|Union]] and [[Confederate States of America|Confederate]] casualties totaling around 31,000.
{{*mp}} [[879]] – [[Pope John VIII]] officially [[Diplomatic recognition|recognised]] [[Principality of Littoral Croatia|Croatia]]<!--not bolded, refimprove--> as an independent state, and '''[[Branimir of Croatia|Branimir]]''' as its [[Duke]].
{{*mp}} [[1674]] – '''[[John III Sobieski]]''' ''(pictured)'', [[free election|elected]] by the [[szlachta]], became the [[List of Polish monarchs|King]] of the [[Polish–Lithuanian Commonwealth]].
* [[1894]] – The '''[[Manchester Ship Canal]]''', linking [[Manchester]] in [[North West England]] to the [[Irish Sea]], officially opened, becoming the world's largest navigation canal at the time.
* [[1924]] – [[University of Chicago]] students '''[[Leopold and Loeb|Nathan Leopold Jr. and Richard Loeb]]''' ''(both pictured)'' murdered a 14-year-old boy in a [[thrill killing]] out of a desire to commit a "[[perfect crime]]".
{{*mp}} [[1881]] – '''[[Clara Barton]]''' founded the [[American Red Cross]].
* [[2014]] – A Taiwanese man '''[[2014 Taipei Metro attack|carried out a stabbing spree]]''' on a [[Taipei Metro]] train, killing four people and injuring 24 others.
{{*mp}} [[1911]] – [[President of Mexico|Mexican President]] [[Porfirio Díaz]] and the revolutionary [[Francisco Madero]] signed the '''[[Treaty of Ciudad Juárez]]''' to put an end to the fighting between the forces of both men, and thus concluding the initial phase of the [[Mexican Revolution]].
{{Born and died list| '''[[Feng Dao]]'''<!--Chinese minister/inventor--> |d|954| '''[[Tommaso Campanella]]'''<!--Italian philosopher--> |d|1639| '''[[Armand Hammer]]'''<!--American businessman--> |b|1898| '''[[Linda Laubenstein]]'''<!--American physician--> |b|1947}}
{{*mp}} [[1946]] – [[Manhattan Project]] [[physicist]] '''[[Louis Slotin]]''' accidentally triggered a [[nuclear fission|fission reaction]] at the [[Los Alamos National Laboratory]] and gave himself a lethal dose of [[hard radiation]], making him the second victim of a [[criticality accident]] in history.
{{SelAnnivFooter|Month=May|Day=21}}
{{*mp}} [[1998]] – [[President of Indonesia|Indonesian President]] '''[[Suharto]]''' resigned following [[Fall of Suharto|the collapse of support]]<!-- Not bolded, refimprove --> for his three-decade-long reign.
</li>
{{SelAnnivFooter|Month=May|Day=21}}<noinclude>
[[af:Wikipedia:Uitgesoekte herdenkings/21 Mei]]
[[ast:Plantía:Efemérides - 21 mayu]]
[[bs:Šablon:Na današnji dan/21. maj]]
[[bg:Шаблон:Начална страница 21 май]]
[[ca:Plantilla:Maig 21]]
[[cs:Wikipedie:Vybraná výročí dne/21. květen]]
[[da:Wikipedia:Årets dage kort/21. maj]]
[[de:Wikipedia:Hauptseite/Jahrestage/Mai/21]]
[[el:Πύλη:Κύρια/Επιλεγμένα Γεγονότα/21 Μαΐου]]
[[es:Plantilla:Efemérides - 21 de mayo]]
[[eu:Txantiloi:Maiatza 21]]
[[fa:ویکی‌پدیا:یادبودهای برگزیده/۲۱ مه]]
[[ga:Vicipéid:Laethanta roghnaithe/21 Bealtaine]]
[[gl:Wikipedia:Efemérides destacadas/21 de maio]]
[[gan:Wikipedia:許年今日/五月二十一號]]
[[ko:위키백과:오늘의 역사/5월 21일]]
[[hr:Wikipedija:Izabrane godišnjice/21. svibnja]]
[[it:Template:PaginaPrincipale/Attualita/21 maggio]]
[[he:תבנית:היום בהיסטוריה 21 במאי]]
[[ka:თარგი:დღის მოვლენები:05-21]]
[[lt:Šablonas:Gegužės 21 dienos įvykiai]]
[[ms:Wikipedia:Hari ulang tahun pilihan/21 Mei]]
[[nl:Sjabloon:Geschiedenis 21 mei]]
[[no:Mal:Mai 21]]
[[pl:Szablon:Rocznice 21 maja]]
[[pt:Wikipedia:Efemérides/21 de maio]]
[[ro:Format:Aniversările zilei/21 mai]]
[[ru:Шаблон:События дня:05-21]]
[[sl:Wikipedija:Izbrane obletnice/21. maj]]
[[sr:Шаблон:Догодило се на данашњи дан/21. мај]]
[[fi:Malline:21. toukokuuta]]
[[sv:Mall:21 maj]]
[[ta:விக்கிப்பீடியா:ஆண்டு நிறைவுகள்/மே 21]]
[[tt:Үрнәк:21/5 könenä küzätü]]
[[th:วิกิพีเดีย:วันนี้ในอดีต/21 พฤษภาคม]]
[[tr:Vikipedi:Tarihte bugün/21 Mayıs]]
[[uk:Вікіпедія:Проект:Цей день в історії/21 травня]]
[[zh-yue:Wikipedia:當年今日/5月21號]]
[[zh:Wikipedia:历史上的今天/5月21日]]
</noinclude>

Latest revision as of 19:25, 20 May 2024

Purge

This is a list of selected May 21 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.

Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.

To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.

← May 20 May 22 →
Staging area

Images

Use only ONE image at a time

  • John III Sobieski, King of Poland
    John III Sobieski, King of Poland
  • John III Sobieski, King of Poland
    John III Sobieski, King of Poland
  • A boat on the Manchester Ship Canal
    A boat on the Manchester Ship Canal
  • Capture of Syracuse
    Capture of Syracuse
  • Suharto
    Suharto
  • Rioters outside San Francisco City Hall on May 21, 1979
    Rioters outside San Francisco City Hall on May 21, 1979
  • Clara Barton
    Clara Barton
  • Kingda Ka roller coaster
    Kingda Ka roller coaster
  • Recreation of the Manhattan Project "demon core"
    Recreation of the Manhattan Project "demon core"

Ineligible

Blurb Reason
Navy Day in Chile; refimprove
996 – Pope Gregory V crowned Otto III as Holy Roman Emperor. refimprove section
1403 – King Henry III of Castile sent an embassy to the Timurid court to discuss a potential alliance against the Ottoman Empire. Too much uncited
1674 – John III Sobieski, elected by the szlachta, became the monarch of the Polish–Lithuanian Commonwealth. unreferenced section
1758 – French and Indian War: Ten-year-old Mary Campbell, taken captive from her Pennsylvania home by members of the Native American group Lenape, likely became the first white child to travel to the Connecticut Western Reserve. refimprove, lead too short
1863 – The Seventh-day Adventist Church, a Protestant denomination distinguished by its emphasis on the imminent second coming (Advent) of Jesus, was founded in Battle Creek, Michigan, U.S. unsourced sections
1879 – War of the Pacific: Two Peruvian ironclads led by Miguel Grau Seminario attempted to lift the blockade of Iquique by Chilean battleships under Arturo Prat at the Battle of Iquique. refimprove
1881 – Clara Barton founded the American Red Cross in Washington, D.C. refimprove section
1904 – The Fédération Internationale de Football Association, the international sport governing body of association football, was founded in Paris. refimprove section
1917 – A fire broke out in Atlanta, destroying several thousand buildings and displacing over 10,000 residents. refimprove section
1939 – King George VI and Queen Elizabeth dedicated Canada's National War Memorial in Ottawa.\ unsourced section
* 1951 – The 9th Street Art Exhibition opened in New York City, marking the formal debut of the abstract expressionism movement. "formal debut" not supported in article
1979 – Riots erupted in San Francisco after former Supervisor Dan White was only sentenced for voluntary manslaughter for the assassinations of Mayor George Moscone and openly gay Supervisor Harvey Milk. misleading section
1981 – The Italian government released the membership list of Propaganda Due, an illegal pseudo-Masonic lodge that had been implicated in numerous Italian crimes and mysteries. refimprove section
1982 – Falklands War: The United Kingdom began a major amphibious assault on the shores of San Carlos Water. refimprove
1996 – Algerian Civil War: The remains of seven French Trappist monks who had been kidnapped in Algeria nearly two months earlier were found. most important part uses an unreliable source
2006 – The Montenegrin independence referendum was held in Montenegro, with 55.5 percent of the voters favouring independence from the State Union of Serbia and Montenegro. unreferenced section
2010 – The Japan Aerospace Exploration Agency launched IKAROS, the first spacecraft to successfully demonstrate solar sail technology in interplanetary space. featured on December 8
Mary Robinson |b|1944| Orange banner

Eligible


May 21: World Day for Cultural Diversity for Dialogue and Development

Richard Loeb (left) and Nathan Leopold (right)
Richard Loeb (left) and Nathan Leopold (right)
More anniversaries:
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