Wikipedia:Selected anniversaries/April 23
This is a list of selected April 23 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.
Images
Use only ONE image at a time
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Charles de Gaulle
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Hank Aaron
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Edmund Ironside
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Hall of the Grand National Assembly of Turkey
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The Golden Dome at the University of Notre Dame, built following the 1879 fire
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William Rowan Hamilton
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Jan Brewer
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Ineligible
| Blurb | Reason |
|---|---|
| World Book Day; | refimprove |
| Saint George's Day in various countries; | refimprove section |
| 1827 – Irish mathematician and physicist William Rowan Hamilton presented his Theory of Systems of Rays. | refimprove section, unreferenced section |
| 1923 – Gdynia was inaugurated as a Polish seaport on the coast of Gdańsk Bay, a southwestern bay of the Baltic Sea. | refimprove section, expansion |
| 1927 – Cardiff City defeated Arsenal 1–0 to win the FA Cup, the only time the trophy has been won by a team outside England. | TFA for 2020 |
| 1935 – Poland adopted a new constitution, introducing a presidential system with certain elements of authoritarianism. | Stubby, no footnotes |
| 1961 – In the midst of the Algerian War, French President Charles de Gaulle delivered a televised speech calling on military personnel and civilians to oppose a coup d'état attempt against him. | refimprove section |
| 1968 – Students protesting the Vietnam War at Columbia University in New York City took over administration buildings and shut down the university. | neutrality issues, refimprove section |
| 1982 – The city of Key West, Florida, facetiously declared independence from the United States to protest a United States Border Patrol roadblock and inspection point along U.S. Route 1, the main road into the city. | refimprove |
Eligible
- 1016 – Edmund Ironside became King of England, reigning for only seven months before the country was conquered by Cnut the Great.
- 1348 – The first appointments to the Order of the Garter, an order of chivalry founded by King Edward III of England, were announced.
- 1516 – The best-known version of the Reinheitsgebot, the German Beer Purity Law, was adopted across the entirety of Bavaria.
- 1879 – A fire destroyed the second version of the Main Building of the University of Notre Dame.
- 1918 – First World War: The British Royal Navy conducted an unsuccessful raid on the German-occupied port of Bruges-Zeebrugge in Belgium.
- 1942 – Second World War: In retaliation for the Royal Air Force bombing of Lübeck several weeks prior, the Luftwaffe began a series of bombing raids in England, starting with Exeter.
- 1951 – American journalist William N. Oatis was arrested for espionage by the Communist government of Czechoslovakia.
- 1979 – Activist Blair Peach suffered fatal head injuries when he was knocked unconscious during an Anti-Nazi League demonstration in Southall, London, against a National Front election meeting in the town hall.
- 1985 – The Coca-Cola Company replaced its flagship soft drink, Coca-Cola, with "New Coke", which generated so much negative response that the company put the previous formula back on the market less than three months later.
- 2009 – Gamma-ray burst GRB 090423 was detected, coming from the most distant astronomical object of any kind known at the time.
- Born/died this day: Wihtred (d. 725) | Joan of France (b. 1464) | Karl Friedrich Bahrdt (d. 1792) | Pandita Ramabai (b. 1858) | Jim Bottomley (b. 1900) | Shirley Temple (b. 1928) | Halston (b. 1932) | Kathy Lynch (b. 1957) | Satyajit Ray (d. 1992)
April 23: National Sovereignty and Children's Day in Turkey (1920)
- 1014 – Forces led by Brian Boru, High King of Ireland, defeated an alliance of Viking and Irish troops at the Battle of Clontarf, which ended with Brian's death.
- 1661 – Charles II was crowned King of England, Scotland and Ireland at Westminster Abbey in London.
- 1920 – The Grand National Assembly of Turkey, the country's unicameral legislature, first met in Ankara in the midst of the Turkish War of Independence.
- 1954 – Batting for the Milwaukee Braves against Vic Raschi of the St. Louis Cardinals, Hank Aaron (pictured) hit the first of his 755 home runs in Major League Baseball.
- 2010 – Arizona governor Jan Brewer signed into law the controversial anti–illegal immigration bill SB 1070, much of which was later struck down by the U.S. Supreme Court.
- Béla III of Hungary (d. 1196)
- Joan of Acre (d. 1307)
- Roy Orbison (b. 1936)