About September 21

September 21, 2025 is the 264th day of the year 2025 in the Gregorian calendar. There are 101 days remaining until the end of this year. The day of the week is Sunday.

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 149 days remaining before the start of the next Chinese New Year.

What Happened On September 21

  • 1435
    An agreement between Charles VII of France and Philip the Good ends the partnership between the English and Burgundy in Hundred Years’ War.
  • 1745
    Battle of Prestonpans: A Hanoverian army under the command of Sir John Cope is defeated, in ten minutes, by the Jacobite forces of Prince Charles Edward Stuart
  • 1780
    American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
  • 1860
    In the Second Opium War, an Anglo-French force defeats Chinese troops at the Battle of Palikao.
  • 1933
    Salvador Lutteroth ran the first ever EMLL (now CMLL) show in Mexico, marking the birth of Lucha Libre
  • 1934
    A large typhoon hits western Honshū, Japan, killing 3,036 people.
  • 1939
    Romanian Prime Minister Armand Calinescu is assassinated by ultranationalist members of the Iron Guard.
  • 1942
    In Poland, at the end of Yom Kippur, Germans order Jews to permanently evacuate Konstantynów and move to the Ghetto in Biała Podlaska, established to assemble Jews from seven nearby towns, including Janów Podlaski, Rossosz and Terespol.
  • 1942
    On the Jewish holiday of Yom Kippur, Nazis send over 1,000 Jews of Pidhaytsi (west Ukraine) to Belzec extermination camp.
  • 1942
    The B-29 Superfortress makes its maiden flight.
  • 1961
    Maiden flight of the CH-47 Chinook transportation helicopter.
  • 1964
    Malta becomes independent from the United Kingdom.
  • 1964
    The North American XB-70 Valkyrie, the world’s first Mach 3 bomber, makes its maiden flight from Palmdale, California.
  • 1965
    Gambia, Maldives and Singapore are admitted as members of the United Nations.
  • 1971
    Bahrain, Bhutan and Qatar join the United Nations.
  • 1976
    Orlando Letelier is assassinated in Washington, D.C. He is a member of the Chilean socialist government of Salvador Allende, overthrown in 1973 by Augusto Pinochet.
  • 1976
    Seychelles joins the United Nations.
  • 1991
    Armenia is granted independence from Soviet Union.
  • 1999
    Chi-Chi earthquake occurs in central Taiwan, leaving about 2,400 people dead.
  • 2001
    Deep Space 1 flies within 2,200 km of Comet Borrelly.

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