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Wikipedia:Selected anniversaries/September 23

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This is an old revision of this page, as edited by PFHLai (talk | contribs) at 01:01, 23 September 2021 (move 1821 Siege of Tripolitsa to Ineligibles for having too many {CN} tags ; not replaced, as DYK is short again). 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 September 23 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.

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Ineligible

Blurb Reason
National Day in Saudi Arabia (1932) both "National Day" article and the country itself are orange tagged
1123Pope Callixtus II and Holy Roman Emperor Henry V agreed to the Concordat of Worms to put an end to the Investiture Controversy. needs more footnotes
1459Yorkist forces led by Richard Neville defeated Lancastrian troops at the Battle of Blore Heath in Staffordshire, England, a major battle of the Wars of the Roses. refimprove section
1779American Revolutionary War: John Paul Jones led a Franco-American squadron to victory in the Battle of Flamborough Head, one of the most celebrated naval actions of the war. rewrite, primary
1821Greek War of Independence: Greek rebels captured Tripolitsa after a five-month siege and began a massacre of Muslim and Jewish residents. needs more footnotes (9 {cn} tags)
1845 – American bookseller Alexander Cartwright founded the New York Knickerbockers, one of the first organized baseball teams. refimprove
1846 – Using mathematical predictions by French mathematician Urbain Le Verrier, German astronomer Johann Gottfried Galle became the first person to observe Neptune and recognise it as a hitherto unknown planet. lots of CN tags (7)
1868Ramón Emeterio Betances led the Grito de Lares, a revolt against Spanish rule in Puerto Rico. needs more footnotes
1899Philippine–American War: The American Asiatic Squadron destroyed a Filipino artillery battery in Olongapo. one source
1932 – The Kingdom of Hejaz and Nejd merged with Al-Hasa and Qatif to form the Kingdom of Saudi Arabia, with Ibn Saud as the first monarch and Riyadh as the capital city. refimprove
1983 – A bomb placed by the Abu Nidal organisation destroyed Gulf Air Flight 771, flying from Karachi, Pakistan, to Abu Dhabi, UAE, killing all 112 people aboard. expansion
2002 – The first version of the web browser Firefox was released by the Mozilla Organization. lots of citations needed (16)
Francesco Barberini |b|1597| lots of citations needed (7)
El Santo |b|1917 refimprove section
Bruce Springsteen |b|1949 refimprove

Eligible

September 23: Celebrate Bisexuality Day

Nintendo headquarters, 1889
Nintendo headquarters, 1889
More anniversaries: