About September 23

September 23, 2022 is the 266th day of the year 2022 in the Gregorian calendar. There are 99 days remaining until the end of this year. The day of the week is Friday.

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 121 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.
  • 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.
  • 1780
    American Revolution: British Major John André is arrested as a spy by American soldiers exposing Benedict Arnold’s change of sides.
  • 1803
    Second Anglo-Maratha War: Battle of Assaye between the British East India Company and the Maratha Empire in India.
  • 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.
  • 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.
  • 1936
    First ascent of Siniolchu by a German team.
  • 1938
    Mobilization of the Czechoslovak army in response to the Munich Crisis.
  • 1942
    World War II: First day of the September Matanikau action on Guadalcanal as United States Marine Corps forces attack Imperial Japanese Army units along the Matanikau River.
  • 1943
    World War II: The Nazi puppet state the Italian Social Republic is founded.
  • 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.
  • 1983
    Gulf Air Flight 771 is bombed, killing all 117 people on board.
  • 1988
    José Canseco of the Oakland Athletics becomes the first member of the 40-40 club.
  • 1992
    A large Provisional Irish Republican Army bomb destroys forensic laboratories in Belfast.
  • 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.

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