Wikipedia:Selected anniversaries/December 12

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This is a list of selected December 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.

December 11 December 13
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Blurb Reason
Independence Day in Kenya (1963) outdated, refimprove section
1862American Civil War: USS Cairo was sunk in the Yazoo River, the first armored ship sunk by a naval mine. refimprove section
1897Belo Horizonte, the first planned city of Brazil, was inaugurated as Cidade de Minas. refimprove section
1901Guglielmo Marconi received the first transatlantic radio signal, from Poldhu Wireless Station in Cornwall, England, to Signal Hill in St. John's, Newfoundland. refimprove section
1915 – President Yuan Shikai of the Republic of China reinstated the monarchy and declared himself Emperor. refimprove section
1918 – The Flag of Estonia was raised for the first time atop the Pikk Hermann in Tallinn. refimprove section
1937 – Japanese aircraft attacked and sank USS Panay while it was anchored in the Yangtze. refimprove section
1956 – The Irish Republican Army began its border campaign, a guerrilla campaign to overthrow British rule in Northern Ireland. refimprove section


December 12: Feast day of Our Lady of Guadalupe (Catholicism); start of the Yule Lads' arrival in Iceland

HMS Duchess
HMS Duchess

Samuel Hood, 1st Viscount Hood (b. 1724) · Gustave Flaubert (b. 1821) · Evelyn S. Lieberman (d. 2015)

More anniversaries: