About September 23
September 23, 2024 is the 267th day of the year 2024 in the Gregorian calendar. There are 99 days remaining until the end of this year. The day of the week is Monday.
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Virgo is the sun sign of a person born on this day. Sapphire is the modern birthstone for this month. Agate is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 128 days remaining before the start of the next Chinese New Year.
September 23: More About This Day
It is frequently the day of the Autumnal Equinox in the Northern Hemisphere and the day of the Vernal Equinox in the Southern Hemisphere.
What Happened On September 23
- 1122 –Pope Calixtus II and Holy Roman Emperor Henry V agree to the Concordat of Worms to put an end to the Investiture Controversy.
- 1459 –Battle of Blore Heath, the first major battle of the English Wars of the Roses, is fought at Blore Heath in Staffordshire.
- 1642 –First commencement exercises occur at Harvard College.
- 1779 –American Revolution: 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.
- 1806 –Lewis and Clark return to St. Louis after exploring the Pacific Northwest of the United States.
- 1846 –Neptune is discovered by French astronomer Urbain Jean Joseph Le Verrier and British astronomer John Couch Adams; the discovery is verified by German astronomer Johann Gottfried Galle.
- 1857 –The Russian warship Lefort capsizes and sinks during a storm in the Gulf of Finland, killing all 826 aboard.
- 1868 –Grito de Lares (“Lares Revolt”) occurs in Puerto Rico against Spanish rule.
- 1905 –Norway and Sweden sign the “Karlstad treaty”, peacefully dissolving the Union between the two countries.
- 1909 –The Phantom of the Opera (original title: Le Fantôme de l'Opéra), a novel by French writer Gaston Leroux, is first published as a serialization in Le Gaulois.
- 1938 –Mobilization of the Czechoslovak army in response to the Munich Crisis.
- 1959 –The MS Princess of Tasmania, Australia’s first passenger roll-on/roll-off diesel ferry, makes her maiden voyage across Bass Strait.
- 1962 –The Lincoln Center for the Performing Arts in New York City opens with the completion of the first building, the Philharmonic Hall (now Avery Fisher Hall) home of the New York Philharmonic.
- 1983 –Gulf Air Flight 771 is bombed, killing all 117 people on board.
- 1983 –Saint Kitts and Nevis joins the United Nations.
- 1988 –José Canseco of the Oakland Athletics becomes the first member of the 40-40 club.
- 1999 –NASA announces that it has lost contact with the Mars Climate Orbiter.
- 1999 –Qantas Flight 1 overruns the runway in Bangkok during a storm. Although some passengers only receive minor injuries, it is still the worst crash in Qantas’s history since 1960.
- 2004 –Hurricane Jeanne: At least 1,070 in Haiti are reported to have been killed by floods.
- 2008 –Kauhajoki school shooting: Matti Saari kills 10 people before committing suicide.
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