Wikipedia:Selected anniversaries/April 20

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This is a list of selected April 20 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 20, 2019 featured article or the April 20, 2019 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.

< April 19 April 21 >


Staging area

Images

Ineligible

Blurb Reason
1303Pope Boniface VIII issued a bull establishing what is now Sapienza University of Rome, today one of the largest universities in Europe. refimprove section
1653Oliver Cromwell dissolved the Rump Parliament of the Commonwealth of England by force, eventually replacing it with the Barebone's Parliament. refimprove section
1657Anglo-Spanish War: An English fleet under Admiral Robert Blake attacked a Spanish treasure fleet at Santa Cruz de Tenerife in the Spanish Canary Islands. refimprove section
1792 – After Foreign Minister Charles François Dumouriez presented the French Legislative Assembly with a long list of grievances against Austria, France declared war to begin the French Revolutionary Wars. refimprove section
1836 – The U.S. Congress passed an act creating the Wisconsin Territory. unreferenced section
1862 – French chemist Louis Pasteur and physiologist Claude Bernard completed the first test on pasteurization. date not in article; Pasteur listed on Sept 28 (death date); fact not in Bernard article
1884Pope Leo XIII published the encyclical Humanum genus, denouncing Freemasonry as well as a number of beliefs and practices purportedly associated with it such as popular sovereignty and the separation of church and state. lots of assorted inline maintenance tags
1908The inaugural season of the New South Wales Rugby League premiership began with nine teams competing in Australia's first Rugby league football competition. refimprove section
1912Fenway Park in Boston, Massachusetts, and Tiger Stadium in Detroit, Michigan, were opened. Fenway: refimprove section;Tiger Stadium: refimprove
1914 – A fire and a gun battle between the Colorado National Guard and striking coal miners in Ludlow, Colorado, led to 17 deaths in the Ludlow Massacre. refimprove section
1939Billie Holiday recorded her version of "Strange Fruit", which gained fame as an emblem of the Civil Rights Movement. self-sourcing examples
1968Pierre Trudeau succeeded Lester B. Pearson as Prime Minister of Canada. refimprove section
1998 – The violent German revolutionary group known as the Red Army Faction announced that it had dissolved. refimprove section
1999 – Students Eric Harris and Dylan Klebold embarked on a massacre, killing 13 people and wounding over 20 others before committing suicide at Columbine High School in Columbine, Colorado. refimprove section

Eligible

April 20: Ridván begins at sunset (Bahá'í Faith); 4/20 (cannabis culture)

Danica Patrick
Danica Patrick

Cædwalla of Wessex (d. 689) · John Abernethy (d. 1831) · Nina Davuluri (b. 1989)

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