Wikipedia:Selected anniversaries/September 23
September 23: Equinox (09:51 UTC, 2007).
- 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.
- 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.
- 1846 – Using mathematical predictions by French mathematician Urbain Le Verrier, German astronomer Johann Gottfried Galle became the first person to observe the planet Neptune (pictured).
More events on this day... Recent days: September 22 – September 21 – September 20
More anniversaries: