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 may 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.
To report an error when this appears on the Main Page, see Main Page errors.April 20: Palm Sunday in Eastern Christianity (2008); Ridván begins at sunset in the Bahá'í Faith; 4/20 in cannabis culture
- 1653 – Oliver Cromwell dissolved the Rump Parliament of the Commonwealth of England by force, eventually replacing it with the Barebone's Parliament.
- 1862 – French chemist Louis Pasteur (pictured) and physiologist Claude Bernard completed the first test on pasteurization.
- 1884 – Pope Leo XIII published the encyclical Humanum Genus, denouncing Freemasonry, the doctrine of a separation of church and state, and many other principles, some of which are today equated by most people with the founding ones of the United States.
- 1968 – British Member of Parliament Enoch Powell made his controversial "Rivers of Blood" speech in opposition to immigration and anti-discrimination legislation, resulting in his removal from the Shadow Cabinet.
- 1978 – Soviet fighters shot down Korean Air Lines Flight 902 after it violated Soviet airspace and failed to respond to Soviet interceptors.
