Vero - Wikipedia:Selected anniversaries/April 23

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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
1879 – A fire destroyed the second version of the Main Building of the University of Notre Dame, one of the oldest Catholic universities in the United States. incomplete citations/page numbers missing
1923Gdynia was inaugurated as a Polish seaport on the coast of Gdańsk Bay, a southwestern bay of the Baltic Sea. expansion
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 ZX Spectrum (pictured), Britain's best-selling microcomputer, was released. Lots of uncited material
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|U.S. Template:Nowrap]], the main road into the city. refimprove section
* 1516 – The best-known version of the Reinheitsgebot, a German law on the purity of beer, was adopted in Bavaria. Number of uncited parts
* 1016Edmund Ironside became King of England, reigning for only seven months before the country was conquered by Cnut the Great. Section tagged for referencing
* 1985The 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. Citations needed
Shirley Temple |b|1928 tag

Eligible

Notes

  • ZX81 appears on March 5, so ZX Spectrum should not appear in the same year.

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April 23: National Sovereignty and Children's Day in Turkey (1920) Template:Main page image/OTD

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