This is a list of selected June 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.
Staging area
Images
Use only ONE image at a time
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Presentation of the Congressional Medal of Honor to Asian-American World War II veterans
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Flag of Greenland -
Ellen Fairclough -
SpaceShipOne -
Charles Davis Lucas -
Knockcroghery railway station -
Knockcroghery clay pipe
.JPG)
Ineligible
| Blurb | Reason |
|---|---|
| Midsummer festivities (Northern Hemisphere); Winter solstice festivals (Southern Hemisphere); | both: refimprove section |
| 1582 – Sengoku period: Oda Nobunaga, the most powerful of the Japanese daimyō, was forced to commit suicide by his own general Akechi Mitsuhide. | refimprove |
| 1734 – Marie-Joseph Angélique, a black slave, was tortured and hanged after having been convicted of starting a fire that burned much of Old Montreal. | Lot of uncited stuff |
| 1798 – Over 15,000 British soldiers launched an attack on Vinegar Hill, the largest camp and headquarters of the County Wexford United Irish rebels, marking a turning point in the Irish Rebellion. | needs more footnotes |
| 1813 – Peninsular War: The Marquess of Wellington's combined British, Portuguese, and Spanish allied army defeated the French near Vitoria, Spain. | needs more footnotes |
| 1851 – Germen chess master Adolf Anderssen defeated Lionel Kieseritzky in the Immortal Game, using bold sacrificial play. | Looks to be sourced to a discussion forum |
| 1854 – Crimean War: During the Battle of Bomarsund, Irish sailor Charles Davis Lucas threw an artillery shell off his ship before it exploded, earning him the first Victoria Cross. | Requiring clean-up: Druminargal House is claimed to be in Poyntzpass, but its address is in Scarva |
| 1942 – Second World War: The Panzerarmee Afrika soundly defeated an Allied force in the Battle of Gazala in Libya, considered the greatest victory of Erwin Rommel's career. | unreferenced section |
| 1964 – Three civil rights workers were murdered by members of the Ku Klux Klan near Philadelphia, Mississippi, U.S. | refimprove section, lots of CN tags elsewhere (11) |
| 1985 – Greenland officially adopted its own flag, adding support to its independence movement from Denmark. | unreferenced section |
| 2000 – The controversial British law known as Section 28, prohibiting the "promotion" of homosexuality, was repealed. | also appears on May 24 |
| 2004 – SpaceShipOne completed the first privately funded human spaceflight. | SS1: refimprove section; 15P: refimprove |
| June solstice (14:54 UTC, 2023); | Article has almost no text and what it does have is uncited |
| Pope Leo IX |b|1002| | Date not cited |
Eligible
- 1128 – William Clito defeated Thierry of Alsace in a battle over the succession to the title of Count of Flanders.
- 1529 – War of the League of Cognac: The French army under Francis de Bourbon was destroyed in Lombardy, Italy, by the Spanish army.
- 1575 – French Wars of Religion: Catholic forces defeated an armed group of Huguenots attempting to capture Besançon, from which they had previously been expelled.
- 1788 – New Hampshire ratified the U.S. Constitution and was admitted as the ninth U.S. state.
- 1826 – Greek War of Independence: A combined Egyptian and Ottoman army began an invasion of the Mani Peninsula, but were initially held off by the Maniots at the fortifications of Vergas.
- 1864 – New Zealand Wars: A British victory against the Māori King Movement brought the Tauranga campaign to an end.
- 1890 – Rudyard Kipling's poem Mandalay was published.
- 1919 – Admiral Ludwig von Reuter scuttled the German High Seas Fleet in Scapa Flow to prevent the ships from being seized and divided amongst the Allied Powers.
- 1921 – Irish War of Independence: Most of the village of Knockcroghery in County Roscommon was burned by British forces.
- 1940 – World War II: The main offensive of the unsuccessful Italian invasion of France began.
- 1957 – Ellen Fairclough became the first woman to be appointed to the cabinet of Canada.
- 1973 – The U.S. Supreme Court delivered its decision in the landmark case Miller v. California, establishing the Miller test for determining what is obscene material.
- 2000 – President Bill Clinton awarded the Medal of Honor to 22 Asian Americans, mostly from the 442nd Regimental Combat Team, for actions during World War II.
- Born/died this day: | Rodulf |d|866| Niccolò Machiavelli |d|1527| Salomon Schweigger |d|1622| Increase Mather |b|1639| Charles Edward Horn |b|1786| Friedrich Fröbel |d|1852|Max Wolf |b|1863| Clara Immerwahr |b|1870| Claude Auchinleck |b|1884| Gideon Sundback |d|1954| Joko Widodo |b|1961| Maureen Connolly |d|1969| William, Prince of Wales|b|1982| Lana Del Rey |b|1985| Kathleen O'Kelly-Kennedy |b|1986| Soad Hosny |d|2001| Wendy Saddington |d|2013|
June 21: Fête de la Musique; International Day of Yoga; National Indigenous Peoples Day in Canada; Xiazhi in China (2024)
Replica of the Manchester Baby
- 217 BC – Second Punic War: The Carthaginians under Hannibal ambushed a Roman army at the Battle of Lake Trasimene, capturing or killing 25,000 men.
- 1848 – In the Wallachian Revolution, Ion Heliade Rădulescu and Christian Tell proclaimed a new republican government in present-day Romania.
- 1898 – In a bloodless event during the Spanish–American War, the United States captured Guam from Spain.
- 1919 – During a general strike in Winnipeg, Canada, members of the Royal North-West Mounted Police attacked a crowd of strikers, armed with clubs and revolvers.
- 1948 – The Manchester Baby (replica pictured), the world's first stored-program computer, ran its first program.
- Claude Auchinleck (b. 1884)
- Maureen Connolly (d. 1969)
- William, Prince of Wales (b. 1982)
- Wong Ho Leng (d. 2014)