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
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John III Sobieski, King of Poland -
A boat on the Manchester Ship Canal -
Leopold and Loeb
-
Charles Lindbergh -
Suharto (requires undeletion)
-
Suharto -
Clara Barton
Ineligible
Eligible
- 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.
- 1904 – The Fédération Internationale de Football Association, the international sport governing body of association football, was founded in Paris.
- 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.
May 21: Armed Forces Day in the United States ( 2011); Navy Day in Chile
- 879 – Pope John VIII officially recognised Croatia as an independent state, and Branimir as its Duke.
- 1674 – John III Sobieski (pictured), elected by the szlachta, became the King of the Polish–Lithuanian Commonwealth.
- 1881 – Clara Barton founded the American Red Cross.
- 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.
- 1998 – Indonesian President Suharto resigned following the collapse of support for his three-decade-long reign.
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
-
Charles Lindbergh
-
Suharto (requires undeletion)
-
Suharto
-
Clara Barton
Ineligible
Eligible
- 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.
- 1904 – The Fédération Internationale de Football Association, the international sport governing body of association football, was founded in Paris.
- 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.
May 21: Armed Forces Day in the United States ( 2011); Navy Day in Chile
- 879 – Pope John VIII officially recognised Croatia as an independent state, and Branimir as its Duke.
- 1674 – John III Sobieski (pictured), elected by the szlachta, became the King of the Polish–Lithuanian Commonwealth.
- 1881 – Clara Barton founded the American Red Cross.
- 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.
- 1998 – Indonesian President Suharto resigned following the collapse of support for his three-decade-long reign.