This is a list of selected April 20 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.
Blurb | Reason |
---|---|
1303 – Pope Boniface VIII issued a bull establishing what is now Sapienza University of Rome, today one of the largest universities in Europe. | refimprove section |
1653 – Oliver Cromwell dissolved the Rump Parliament of the Commonwealth of England by force, eventually replacing it with the Barebone's Parliament. | refimprove section |
1836 – The US 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. | need to verify date |
1908 – The inaugural season of the New South Wales Rugby League premiership began with nine teams competing in Australia's first Rugby league football competition. | needs more footnotes |
1912 – Fenway Park in Boston, Massachusetts, and Tiger Stadium in Detroit, Michigan, were opened. | Tiger Stadium: unreferenced section |
1939 – Billie Holiday recorded her version of " Strange Fruit", which gained fame as an emblem of the Civil Rights Movement. | 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 |
2008 – American Danica Patrick won the Indy Japan 300, becoming the first woman to win an IndyCar auto race. | refimprove section |
2010 – An explosion on Deepwater Horizon, an offshore oil rig in the Gulf of Mexico, caused the largest accidental marine oil spill in the history of the petroleum industry. | POTD for 2016 |
April 20: Ridván begins at sunset ( Bahá'í Faith); 4/20 ( cannabis culture)
This is a list of selected April 20 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.
Blurb | Reason |
---|---|
1303 – Pope Boniface VIII issued a bull establishing what is now Sapienza University of Rome, today one of the largest universities in Europe. | refimprove section |
1653 – Oliver Cromwell dissolved the Rump Parliament of the Commonwealth of England by force, eventually replacing it with the Barebone's Parliament. | refimprove section |
1836 – The US 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. | need to verify date |
1908 – The inaugural season of the New South Wales Rugby League premiership began with nine teams competing in Australia's first Rugby league football competition. | needs more footnotes |
1912 – Fenway Park in Boston, Massachusetts, and Tiger Stadium in Detroit, Michigan, were opened. | Tiger Stadium: unreferenced section |
1939 – Billie Holiday recorded her version of " Strange Fruit", which gained fame as an emblem of the Civil Rights Movement. | 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 |
2008 – American Danica Patrick won the Indy Japan 300, becoming the first woman to win an IndyCar auto race. | refimprove section |
2010 – An explosion on Deepwater Horizon, an offshore oil rig in the Gulf of Mexico, caused the largest accidental marine oil spill in the history of the petroleum industry. | POTD for 2016 |
April 20: Ridván begins at sunset ( Bahá'í Faith); 4/20 ( cannabis culture)