This is a list of selected October 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 articleorpicture 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.
| ← October 22 | October 24 → |
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Use only ONE image at a time
| Blurb | Reason |
|---|---|
| Chulalongkorn Memorial DayinThailand | refimprove; cleanup required |
| 42 BCE – Roman Republican civil wars: At the Second Battle of Philippi, Brutus's army was decisively defeated by Mark Antony and Octavian. | no footnotes |
| 425 – Valentinian III became emperor of the Western Roman Empire at the age of six. | lead too short |
| 1642 – The Battle of Edgehill, the first pitched battle of the First English Civil War between the Royalists and the Parliamentarians, was fought to an inconclusive result near Edge Hill and Kineton in southern Warwickshire. | refimprove |
| 1739 – Great Britain declared war on Spain, starting the War of Jenkins' Ear. | unreferenced section |
| 1906 – Early flight: Alberto Santos-Dumont flew the 14-bis aircraft for 60 metres (200 ft) at a height of two to three metres (10 ft). | Santos-Dumont: needs more footnotes; 14-bis: needs more footnotes |
| 1958 – In his comic series Johan and Peewit in the weekly magazine Spirou, Belgian cartoonist Peyo introduced a new set of small sky blue characters known as the Smurfs. | lead too short |
| 1989 – A massive explosion and fire ripped through the Phillips 66 Houston Chemical Complex, killing 23 employees and injuring 314 others. | lead too short |
| 2001 – The iPod, the line of portable media players designed and marketed by Apple, was launched. | unreferenced section |
October 23: Shemini Atzeret begins at sunset (Judaism, 2016); National DayinHungary (1956); Mole Day
