Wikipedia:Selected anniversaries/May 12
This is a list of selected May 12 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, featured list 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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George VI of the United Kingdom -
Coat of Arms of the National University of San Marcos
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NORAD -
NORAD, at Cheyenne Mt., Colorado
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Konrad Zuse in 1992 (requires undeletion)
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Konrad Zuse in 1992 -
Louis Riel -
National University of San Marcos
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Ineligible
| Blurb | Reason |
|---|---|
| 1551 – The National University of San Marcos, the oldest university in the Americas, was founded in Lima, Peru. | tagged for expansion, copyediting |
| 1958 – Canada and the United States signed a formal agreement establishing the North American Air Defense Command to provide aerospace warning and defense for North America. | refimprove |
Eligible
- 1885 – North-West Rebellion: Louis Riel and the Métis rebels were decisively defeated by Canadian forces under Major-General Frederick Middleton in Batoche, Saskatchewan.
- 1926 – The Trades Union Congress, a federation of British trade unions, announced that it would end its week-long general strike "in defence of [coal] miners' wages and hours".
- 1942 – World War II: – Soviet forces under Marshal Semyon Timoshenko launched a major offensive in the eastern Ukraine, only to be encircled and destroyed by German troops two weeks later.
- 1975 – The Cambodian navy seized the American container ship SS Mayaguez in recognized international waters, but claimed as territorial waters by Cambodia.
- 2008 – An earthquake measuring about 8.0 Ms struck the Sichuan province of China, killing at least 69,000 people, injuring at least 374,000, and leaving at least 4.8 million others homeless.
- 2008 – In Postville, Iowa, U.S. Immigration and Customs Enforcement conducted the largest-ever raid of a workplace and arrested nearly 400 immigrants for identity theft and document fraud.
May 12: Mother's Day in several countries (2024); International Nurses Day
- 1364 – King of Poland Casimir III issued a royal charter to establish Jagiellonian University, the nation's oldest university.
- 1865 – In the last major clash of arms of the American Civil War, the Union Army engaged the Confederates along the banks of the Rio Grande east of Brownsville, Texas.
- 1881 – Under the threat of invasion, the Bey of Tunis Muhammad III as-Sadiq (pictured) signed the Treaty of Bardo to make Tunisia a French protectorate.
- 1941 – German engineer Konrad Zuse presented the Z3, the world's first working programmable, fully automatic computer, to an audience of scientists in Berlin.
- 1968 – The 1st Australian Task Force began the defence of Fire Support Base Coral in the largest unit-level action of the Vietnam War for the Australian Army.
- 2006 – A cartoon that allegedly compared Iranian Azeris to cockroaches was published in an Iranian magazine, sparking riots throughout the country.