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.
September 23: September Equinox (03:09 UTC, 2010); 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, the first major battle of the Wars of the Roses.
- 1803 – Maratha troops were beaten by British forces at the Battle of Assaye, one of the decisive battles of the Second Anglo-Maratha War.
- 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 (pictured).
- 1868 – Ramón Emeterio Betances led the Grito de Lares, a revolt against Spanish rule in Puerto Rico.
- 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.