Wikipedia:Selected anniversaries/April 9
This is a list of selected April 9 anniversaries that appears on 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 soon will 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 5–6 events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is not generally posted this year if it is also the subject of the scheduled April 9, 2015 featured article or the April 9, 2015 featured picture.
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.
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Mercury Monument honoring the original seven astronauts
|1241 – A combined force of Poles and Germans attempted to halt the Mongol invasion of Europe at the Battle of Legnica near present-day Legnica, Poland.||Needs more footnotes|
|1413 – Henry V, who is featured in three plays by William Shakespeare, was crowned King of England.||needs more footnotes|
|1940 – World War II: Nazi Germany began Operation Weserübung, invading Denmark and Norway.||refimprove section|
|1967 – The first Boeing 737 took its maiden flight, eventually becoming the most ordered and produced commercial passenger jet airliner in the world.||blacklisted URL|
|1989 – An anti-Soviet demonstration in Tbilisi, Georgia, was quashed by the Soviet army, resulting in 20 deaths and hundreds of injuries.||unreferenced section|
- 1865 – With their supply trains destroyed by Union troops one day earlier, Confederate forces under Robert E. Lee surrendered to Ulysses S. Grant at the McLean House near the Appomattox Court House in Virginia, effectively ending the American Civil War.
- 1917 – First World War: The Canadian Corps began the first wave of attacks at the Battle of Vimy Ridge in Vimy, France.
- 1940 – During the German invasion of Norway, Vidkun Quisling seized control of the government in a Nazi-backed coup d'état.
- 1942 – World War II: Japanese forces defeated Allied troops at the Battle of Bataan on the Bataan Peninsula in the Philippines before beginning to forcibly transfer more than 90,000 prisoners of war to prison camps in the Bataan Death March.
- 1947 – Sixteen white and black men began a two-week journey in the American South, acting in defiance of local laws that enforced segregated seating on public buses.
- 1947 – The Glazier–Higgins–Woodward tornadoes killed 181 people and injured 970 others in Texas, Oklahoma, and Kansas.
- 1948 – Fighters from the Irgun and Lehi Zionist paramilitary groups attacked Deir Yassin near Jerusalem, killing over 100.
- 1959 – NASA announced the selection of the Mercury Seven, the first astronauts in Project Mercury.
- 2003 – Invasion of Iraq: Coalition forces captured Baghdad and the statue of Saddam Hussein in Firdos Square was toppled.
- 1860 – On his phonautograph machine, Édouard-Léon Scott de Martinville made the oldest known recording of an audible human voice, when he recorded himself singing "Au clair de la lune".
- 1918 – World War I: Aníbal Milhais's actions during the Battle of the Lys made him the only person to be awarded Portugal's highest military honour Order of the Tower and Sword directly on the battlefield.
- 1939 – After being denied permission to perform at Constitution Hall by the Daughters of the American Revolution, African American singer Marian Anderson (pictured) gave an open-air concert on the steps of the Lincoln Memorial in Washington, D.C.
- 1999 – President of Niger Ibrahim Baré Maïnassara was shot to death by soldiers in Niamey.
- 2005 – Charles, Prince of Wales, married his long-time mistress Camilla Parker Bowles.