Wikipedia:Selected anniversaries/May 21
This is a list of selected May 21 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.
Images
Use only ONE image at a time
-
John III Sobieski, King of Poland -
A boat on the Manchester Ship Canal -
Leopold and Loeb
-
Suharto (requires undeletion)
-
Suharto -
Clara Barton -
John III Sobieski, King of Poland
Ineligible
| Blurb | Reason |
|---|---|
| 879 – Pope John VIII officially recognised Croatia as an independent state, and Branimir as its Duke. | refimprove |
| 1758 – French and Indian War: Ten-year-old Mary Campbell, taken captive from her Pennsylvania home by members of the Native American group Lenape, likely became the first white child to travel to the Connecticut Western Reserve. | refimprove, lead too short |
| 1879 – War of the Pacific: Two Peruvian ironclads led by Miguel Grau Seminario attempted to lift the blockade of Iquique by Chilean battleships under Arturo Prat at the Battle of Iquique. | refimprove |
| 1924 – University of Chicago students Richard Loeb and Nathan Leopold, Jr. murdered a 14-year-old boy in a thrill killing out of a desire to commit a perfect crime. | refimprove section |
| 1991 – Former Prime Minister of India Rajiv Gandhi was assassinated by a suicide bomber in Sriperumbudur, Tamil Nadu. | Tagged with {{POV}}, refimprove |
| 2006 – The Montenegrin independence referendum was held in Montenegro, with 55.5 percent of the voters favouring independence from the State Union of Serbia and Montenegro. | refimprove section |
Eligible
- 1863 – The Seventh-day Adventist Church, a Protestant denomination distinguished by its emphasis on the imminent second coming (Advent) of Jesus, was founded in Battle Creek, Michigan, US.
- 1881 – Clara Barton founded the American Red Cross.
- 1894 – The Manchester Ship Canal, linking Greater Manchester in North West England to the Irish Sea, officially opened, becoming the largest navigation canal in the world at the time.
- 1911 – Mexican President Porfirio Díaz and the revolutionary Francisco Madero signed the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, and thus concluding the initial phase of the Mexican Revolution.
- 1946 – Manhattan Project physicist Louis Slotin accidentally triggered a fission reaction at the Los Alamos National Laboratory and gave himself a lethal dose of hard radiation, making him the second victim of a criticality accident in history.
- 1979 – Riots erupted in San Francisco after former Supervisor Dan White was only sentenced for voluntary manslaughter for the assassinations of Mayor George Moscone and openly gay Supervisor Harvey Milk.
- 1982 – Falklands War: The United Kingdom began a major amphibious assault on the shores of San Carlos Water.
- 1998 – Indonesian President Suharto resigned following the collapse of support for his three-decade-long reign.
- 2010 – The Japan Aerospace Exploration Agency launched IKAROS, the first spacecraft to successfully demonstrate solar sail technology in interplanetary space.
May 21: Victoria Day in Canada (2012); Navy Day in Chile
- 1674 – John III Sobieski, elected by the szlachta, became the monarch of the Polish–Lithuanian Commonwealth.
- 1856 – A crowd of about 800 pro-slavery Americans ransacked the town of Lawrence, Kansas.
- 1904 – The Fédération Internationale de Football Association, the international sport governing body of association football, was founded in Paris.
- 1927 – Aboard the Spirit of St. Louis, American aviator Charles Lindbergh (pictured) completed the first solo non-stop transatlantic flight, flying from Roosevelt Field near New York City to Paris – Le Bourget Airport.
- 1981 – The Italian government released the membership list of Propaganda Due, an illegal pseudo-Masonic lodge that had been implicated in numerous Italian crimes and mysteries.
- 1996 – Algerian Civil War: The remains of seven French Trappist monks who had been kidnapped in Algeria nearly two months earlier were found.