It is the 266th day of the year, with 99 days remaining until the end of the year.
It is frequently the day of the Autumnal Equinox in the Northern Hemisphere, and the day of the Vernal Equinox in the Southern Hemisphere.
1459 - The Battle of Blore Heath begins, as the first major battle of the English Wars of the Roses in Stafforshire.
1642 - The first commencement exercises occur at Harvard College.
1779 - A squadron commanded by John Paul Jones on board the USS Bonhomme Richard wins the Battle of Flamborough Head, off the coast of England, against two British warships.
1780 - British Major John Adnre is arrested as a spy by American soldiers exposing Benedict Arnold's change of sides.
1806 - Lewis and Clark return to St. Louis after exploring the Pacific Northwest of the United States.
1845 - The Knickerbockers Baseball Club, the first baseball team to play under the modern rules, is founded in New York.
1889 - Nintendo Koppai, is founded by Fusajiro Yamauchi to produce and market the playing card game Hanafuda.
1909- The Phantom of the Opera, a novel by French writer Gaston Lerou, is first published as a serialization in Le Gaulois.
1941 - The first gas chamber experiments by the Nazis are conducted at Auschwitz.
1986 - Jim Deshaies of the Houston Astros sets the major-league record by striking out the first eight batters of the game against the Los Angeles Dodgers.
1988 - Jose Canseco, while playing for the Oakland Athletics, becomes the first member of the 40-40 club, forty home runs and forty stolen bases in one season.
2002 - The first public version of the web browser Mozilla Firefox is released.
2004 - Hurricane Jeanne strikes Haiti, where at least 1,070 are reported to have been killed by floods.