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Wikipedia:Selected anniversaries/April 12

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This is a list of selected April 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 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.

April 11 April 13
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Ineligible

Blurb Reason
240Shapur I was crowned the shahanshah ('king of kings') of the Sasanian Empire, the last Iranian empire before the rise of Islam. refimprove, unreferenced section
467Anthemius was proclaimed Western Roman Emperor at the third or twelfth mile from Rome. refimprove section
1606 – A royal decree established the Union Jack to symbolise the Union of the Crowns, merging the designs of the flag of England and the flag of Scotland. refimprove sections
1782American Revolutionary War: The Royal Navy defeated a French fleet at the Battle of the Saintes, forcing the latter to abandon a planned invasion of Jamaica. unreferenced section
1927Chinese Civil War: A large-scale purge of Chinese communists from the nationalist Kuomintang began in Shanghai. refimprove section
1981Columbia, the first spaceworthy space shuttle, was launched from the Kennedy Space Center in Florida on its first flight. refimprove section
1990Jim Gary became the only sculptor to present a solo show at the Smithsonian Institution's National Museum of Natural History in Washington, D.C., featuring his trademark dinosaur sculptures made of automobile parts. refimprove section
1992Disneyland Paris, the first Walt Disney park in Europe, opened in the Paris suburb of Marne-la-Vallée. refimprove section
1994 – Husband-and-wife law partners Laurence Canter and Martha Siegel posted the first massive commercial spam on Usenet. citation-needed tags
2007 – The canteen of the Council of Representatives of Iraq building was attacked by a suicide bomber, killing one Member of Parliament and wounding 23 other people. citation-needed tags
* 627 – King Edwin of Northumbria was baptised by Bishop Paulinus of York. citations needed

Eligible

Notes

April 12: Cosmonautics Day in Russia (1961); Yuri's Night

NATO F-15 fighter aircraft during Operation Deny Flight
NATO F-15 fighter aircraft during Operation Deny Flight
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