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Wikipedia:Selected anniversaries/April 11

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This is a list of selected April 11 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. Before doing so, please review the selected anniversaries guidelines. If your suggestion is potentially controversial or relates to a day currently or soon to appear on the Main Page, post it on the talk page instead.

Please note:

  • Events listed on the Main Page are selected based on article quality and to provide a diverse range of topics, rather than solely on the importance or significance of the events.
  • Only four or five events are featured each day; therefore, not all important or significant events can be included.
  • An event is generally excluded if it is already the subject of the scheduled featured article or picture of the day.

To report an error in content currently on the Main Page, see Wikipedia:Main Page/Errors. If a listed event is inaccurate, please first seek consensus and update the corresponding article before making changes here.

April 10 April 12
Staging area

Images

Use only ONE image at a time

Ineligible

Blurb Reason
Juan Santamaría Day in Costa Rica refimprove
1241Mongol invasion of Europe: Mongols led by Batu Khan and Subutai crushed the Hungarian army of King Béla IV at the Battle of Mohi near the Sajó River in Hungary. refimprove section
1713 – The main agreements of the Treaty of Utrecht were signed in the Dutch city of Utrecht, helping to end the War of the Spanish Succession. refimprove section
1828Bahía Blanca in Argentina was founded as a fortress to protect dwellers and their cattle from native rustling, and to protect the coast from the Brazilian Navy. citations need formatting
1909 – The city of Tel Aviv in Ottoman Syria was founded as 66 Jewish families held a lottery to distribute land their organisation had purchased north of Jaffa. refimprove section
1965 – Almost 50 confirmed tornadoes struck six states in the Midwestern United States during the Palm Sunday tornado outbreak, killing over 270 people and injuring 1,500 others. needs more footnotes
1981 – Tensions between residents and the police in Brixton, South London, escalated into a massive riot that resulted in almost 300 police injuries, 45 civilian injuries, over a hundred vehicles burned, and over 150 buildings damaged. refimprove
1986 – Eight FBI agents exchanged gunfire with two bank robbers in Miami, Florida, an incident which led to the introduction of more powerful handguns in many police departments around the country. unreferenced section
2002 – In a coup attempt, members of the Venezuelan military detained President Hugo Chávez and demanded his resignation. multiple issues

Eligible

April 11: Holy Saturday (Eastern Christianity, 2015); Easter Saturday (Western Christianity, 2015)

The Concertgebouw, Amsterdam

More anniversaries: