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This is a list of selected January 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
393 – Roman emperor Theodosius I proclaimed his eight-year-old son Honorius co-emperor. both: refimprove section
1368 – Zhu Yuanzhang ascended to the throne of China as the Hongwu Emperor, initiating Ming dynasty rule over China that would last for three centuries. appears on April 25
1565 – The Deccan sultanates defeated the Vijayanagara Empire at the Battle of Talikota in present-day Karnataka, ending the last great Hindu kingdom in southern India. no footnote for date
1579 – The Union of Utrecht was signed, unifying the northern provinces in the Low Countries which later formed the Dutch Republic. needs more footnotes
1656 – Under the pseudonym Louis de Montalte, French mathematician, physicist, and religious philosopher Blaise Pascal published the first of his Lettres provinciales, attacking the Jesuits and their use of casuistic reasoning. refimprove
1719 – Emperor Charles VI established Liechtenstein, the only principality in the Holy Roman Empire still in existence today. refimprove section
1795War of the First Coalition: In a rare battle between cavalry and naval ships, a French Hussar regiment captured a Dutch fleet frozen at anchor between the port of Den Helder and the island of Texel. multiple issues
1899 – Pursuant to the adoption of the Malolos Constitution and the establishment of the First Philippine Republic, Emilio Aguinaldo was sworn in as the first president of the Philippines. Republic: refimprove section; Aguinaldo: refimprove
1912 – Twelve nations signed the International Opium Convention, the first international drug control treaty, to regulate the production and distribution of opiates. short
1945 – German Grand Admiral Karl Dönitz ordered the beginning of Operation Hannibal, which became one of the largest emergency evacuations by sea in history, with over 1 million people transferred over 15 weeks. refimprove section
1960 – The bathyscaphe Trieste reached the record depth of 10,916 m (35,814 ft) in the Challenger Deep area of the Mariana Trench. section duplicates other content
1986 – The Rock and Roll Hall of Fame in Cleveland, Ohio, inducted its first members, including Chuck Berry, James Brown, Ray Charles, Sam Cooke, Fats Domino, the Everly Brothers, Buddy Holly, Jerry Lee Lewis, Little Richard, and Elvis Presley. refimprove section
2004Viktor Yushchenko was inaugurated as president of Ukraine, bringing the Orange Revolution to its conclusion. unreferenced section
2006 – After 12 years of Liberal Party's rule, Stephen Harper's Conservative Party won the most seats in the Canadian federal election. unreferenced section, refimprove section
Johann Wilhelm Ritter |d|1810| Lead too short
Muthu Coomaraswamy |b|1834 Lead too short
Mykola Leontovych |d|1921 Death date in lead and body conflict
Yukie Kawamura |b|1986 Ref improve

Eligible

January 23

A Frisbee brand flying disc
A Frisbee brand flying disc
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