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.

You can browse the full year calendar in case you need it.

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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.
  • 1641
    The Merchant Royal, carrying a treasure worth over a billion US dollars, is lost at sea off Land’s End.
  • 1642
    First commencement exercises occur at Harvard College.
  • 1821
    Tripolitsa, Greece, falls and 30,000 Turks are massacred during the Greek War of Independence.
  • 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.
  • 1908
    University of Alberta in Alberta, Canada, is founded.
  • 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.
  • 1932
    The Kingdom of Hejaz and Nejd is renamed the Kingdom of Saudi Arabia.
  • 1952
    Richard Nixon makes his “Checkers speech”.
  • 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.
  • 1972
    Philippine President Ferdinand Marcos announces over television and radio the implementation of martial law.
  • 1983
    Gerrie Coetzee of South Africa becomes the first African boxing world heavyweight champion.
  • 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.
  • 1999
    Celebrate Bisexuality Day was first observed in the United States.
  • 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.
  • 2002
    The first public version of the web browser Mozilla Firefox (“Phoenix 0.1”) is released.
  • 2004
    Hurricane Jeanne: At least 1,070 in Haiti are reported to have been killed by floods.

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