Wikipedia:Selected anniversaries/September 23
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.
Images
Use only ONE image at a time
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Richard Nixon delivering Checkers speech -
Alexander Cartwright -
Ramon Betances -
Neptune
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Ineligible
| Blurb | Reason |
|---|---|
| September Equinox (09:04 UTC, 2011); | unreferenced sections |
| 1845 – American bookseller Alexander Cartwright founded the New York Knickerbockers, one of the first organized baseball teams, as well as formalizing a set of rules that became the basis for the rules of the modern game. | needs more footnotes |
| 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. | neutrality issues |
| 1889 – Fusajiro Yamauchi founded Nintendo in Kyoto, Japan, to produce handmade hanafuda cards. | refimprove, original research |
Eligible
- 1123 – Pope Calixtus II and Holy Roman Emperor Henry V agreed to the Concordat of Worms to put an end to the Investiture Controversy.
- 1568 – Anglo–Spanish War: At San Juan de Ulúa (in modern Veracruz, Mexico), Spanish naval forces forced English privateers to halt their illegal trade.
- 1779 – American Revolutionary War: John Paul Jones led the Continental Navy to victory in the Battle of Flamborough Head, one of the most celebrated naval actions of the war.
- 1780 – American Revolutionary War: British officer John André was captured by Patriot forces, thereby revealing a plot by Continental Army General Benedict Arnold to hand over West Point, New York.
- 1803 – Maratha troops were beaten by British forces at the Battle of Assaye, one of the decisive battles of the Second Anglo-Maratha War.
- 1875 – Billy the Kid was arrested for the first time after stealing clothes from a laundryman, beginning his life as an infamous American outlaw and gunman.
- 1932 – The Kingdom of Nejd and Hejaz 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.
- 1952 – In one of the first political uses of television to appeal directly to the populace, Republican vice presidential candidate Richard Nixon delivered the "Checkers speech", refuting accusations of improprieties with contributions to his campaign.
September 23: National Day in Saudi Arabia (1932); Celebrate Bisexuality Day
- 1459 – Yorkist 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.
- 1868 – Ramón Emeterio Betances (pictured) led the Grito de Lares, a revolt against Spanish rule in Puerto Rico.
- 1899 – Philippine-American War: The American Asiatic Squadron destroyed a Filipino artillery battery in Olongapo.
- 1983 – A bomb placed by the Abu Nidal organisation destroyed Gulf Air Flight 771, flying from Karachi, Pakistan, to Abu Dhabi, UAE, killing all 110 people aboard.
- 2008 – A gunman shot and killed ten students at Seinäjoki University of Applied Sciences in Kauhajoki, Western Finland, before committing suicide.