Wikipedia:Selected anniversaries/April 11
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. 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.
April 11: Holy Saturday (Western Christianity, 2009); Juan Santamaría Day in Costa Rica
- 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.
- 1814 – The Treaty of Fontainebleau was signed, ending the War of the Sixth Coalition, and forcing Napoleon to abdicate as ruler of France and sending him into exile on Elba.
- 1888 – The Concertgebouw concert hall in Amsterdam, the Netherlands, was inaugurated.
- 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.
- 1979 – Ugandan–Tanzanian War: The Uganda National Liberation Army and Tanzanian forces captured Kampala, forcing Ugandan President Idi Amin to flee.
- 2002 – In a coup attempt, members of the Venezuelan military detained President Hugo Chávez (pictured) and demanded his resignation.