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This is a list of selected April 16 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 15 April 17
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Ineligible

Blurb Reason
; Emancipation Day in Washington, D.C. DC is only a small part of the article; it doesn't seem right to feature this
Queen Margrethe II's birthday in Denmark unreferenced section (Ancestry)
Feast day of Saint Bernadette Soubirous (Catholicism) too many citations needed
1582 – Spanish conquistador Hernando de Lerma founded the settlement of Salta in Argentina. refimprove
1746 – Forces of the House of Hanover defeated the Jacobites at the Battle of Culloden, the final confrontation of the Jacobite Rising. refimprove section
1818 – The United States Senate ratified the Rush–Bagot Treaty, which laid the basis for a demilitarized boundary between the U.S. and British North America. refimprove section
1853 – The first passenger train of the Great Indian Peninsula Railway, a predecessor of the modern-day Indian Railways, travelled from Bombay to Tanna. Unreferenced section
1881 – Famed lawman Bat Masterson of the American Old West engaged in his last gun battle before later becoming a journalist. many CN tags (16); trivial pop culture
1925 – A group of Bulgarian Communist Party members assaulted the St Nedelya Church in Sofia, Bulgaria, during the funeral service of General Konstantin Georgiev, killing 150 people and injuring about 500 others. refimprove
1941World War II: After the Axis invasion of Yugoslavia ten days earlier, Ante Pavelić declared a new government in Croatia to be led by the fascist Ustashe. section missing summary
1945World War II: Nearly one million Soviet soldiers began the Battle of the Seelow Heights against the "Gates of Berlin". refimprove section
1947 – Thousands of tons of ammonium nitrate in the port of Texas City, Texas, exploded, killing 581 people, which later led to the first ever class action lawsuit against the U.S. government. refimprove
1947 – American financier and presidential adviser Bernard Baruch first described the post–World War II tensions between the Soviet Union and the United States as a "cold war". multiple issues
* 1948 – The OECD, an intergovernmental economic organisation, was founded as the Organisation for European Economic Co-operation to help administer the Marshall Plan. Lack of referencing
2003 – The Treaty of Accession was signed in Athens, admitting ten new member states into the European Union, including several countries of the former Eastern Bloc. no footnotes
Easter (Eastern Christianity, 2023); 12 citation needed tags and uncited section tag
Divine Mercy Sunday (Catholicism, 2023) Orange tagged for notability
* 1917Vladimir Lenin returned to Petrograd from Switzerland, where he joined the Bolshevik movement in Russia. Date not in article

Eligible

April 16

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MV Sewol
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