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Wikipedia:Selected anniversaries/February 21

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This is an old revision of this page, as edited by Dumelow (talk | contribs) at 10:25, 21 February 2021 (decap siege, per wp:errors). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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This is a list of selected February 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, featured list 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.

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Ineligible

Blurb Reason
International Mother Language Day refimprove section
1543Abyssinian–Adal war: Led by Ethiopian emperor Gelawdewos, a combined army of Ethiopian and Portuguese troops defeated a Muslim army led by Imam Ahmad ibn Ibrahim al-Ghazi. date not cited
1613Michael was elected unanimously by the Zemsky Sobor to become Tsar, beginning the Romanov dynasty in Imperial Russia. needs more footnotes
1804 – Built by Cornish inventor Richard Trevithick, the first self-propelled steam locomotive ran in Wales. Trevithick: needs more footnotes; Locomotive: refimprove section
1848 – Communist theorists Karl Marx and Friedrich Engels published The Communist Manifesto, which became one of the world's most influential political tracts. refimprove
1878 – The first telephone directory, consisting of a single page, was issued to fifty subscribers in New Haven, Connecticut. refimprove
1918 – The Carolina parakeet, the only parrot species native to the eastern United States, became extinct when the last individual died in captivity at the Cincinnati Zoo. refimprove
1921Reza Khan seized Tehran to make himself the most powerful person in Iran, which eventually led to the establishment of the Pahlavi dynasty. lots of CN tags (9)
1921 – The Constituent Assembly of Georgia adopted the nation's first constitution, shortly before being overthrown by the Soviet Union. lots of CN tags (relative to length) (2)
1947Edwin H. Land demonstrated the use of the first instant camera to the Optical Society of America. both: refimprove
1948Bill France Sr. and several other race car drivers founded NASCAR, the governing body of stock car racing in the United States. multiple issues
1971 – The Convention on Psychotropic Substances, a United Nations treaty designed to control psychoactive drugs, was signed at a conference of plenipotentiaries in Vienna. refimprove section
1245Pope Innocent IV accepted the resignation of Thomas, the first known bishop of Finland, after he confessed to torture and forgery. sourcing issues

Eligible

February 21: Language Movement Day in Bangladesh (1952)

Peace sign designed by Gerald Holtom
Peace sign designed by Gerald Holtom
More anniversaries: