About March 21

March 21, 2023 is the 80th day of the year 2023 in the Gregorian calendar. There are 285 days remaining until the end of this year. The day of the week is Tuesday.

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

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Aries is the sun sign of a person born on this day. Aquamarine is the modern birthstone for this month. Jade is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 326 days remaining before the start of the next Chinese New Year.

March 21: More About This Day

March 21st is the common date of the March equinox (although astronomically the equinox is more likely to fall on March 20 in all but the most easterly longitudes). In astrology, the day of the equinox is the first full day of the sign of Aries. It is also the traditional first day of the astrological year.

What Happened On March 21

  • 1413
    Henry V becomes King of England.
  • 1788
    A fire in New Orleans leaves most of the town in ruins.
  • 1800
    With the church leadership driven out of Rome during an armed conflict, Pius VII is crowned Pope in Venice with a temporary papal tiara made of papier-mâché.
  • 1918
    World War I: The first phase of the German Spring Offensive, Operation Michael, begins.
  • 1921
    The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of War Communism.
  • 1933
    Construction of Dachau, the first Nazi concentration camp, is completed.
  • 1937
    Ponce Massacre: 18 people and a 7-year-old girl in Ponce, Puerto Rico, are gunned down by a police squad acting under orders of US-appointed Governor, Blanton C. Winship.
  • 1943
    Wehrmacht officer Rudolf Christoph Freiherr von Gersdorff plots to assassinate Adolf Hitler by using a suicide bomb, but the plan falls through. Von Gersdorff is able to defuse the bomb in time and avoid suspicion.
  • 1945
    World War II: Bulgaria and the Soviet Union successfully complete their defense of the north bank of the Drava River as the Battle of Drava concludes.
  • 1960
    Apartheid: Massacre in Sharpeville, South Africa: Police open fire on a group of unarmed black South African demonstrators, killing 69 and wounding 180.
  • 1963
    Alcatraz, a federal penitentiary on an island in San Francisco Bay, closes.
  • 1964
    In Copenhagen, Denmark, Gigliola Cinquetti wins the ninth Eurovision Song Contest for Italy singing “Non ho l'età” (“I'm not old enough”).
  • 1965
    Martin Luther King, Jr. leads 3,200 people on the start of the third and finally successful civil rights march from Selma to Montgomery, Alabama.
  • 1965
    Ranger program: NASA launches Ranger 9 which is the last in a series of unmanned lunar space probes.
  • 1968
    Battle of Karameh in Jordan between Israeli Defense Forces and Fatah.
  • 1970
    The first Earth Day proclamation is issued by Mayor of San Francisco Joseph Alioto.
  • 1980
    On the season finale of the soap opera Dallas, the infamous character J.R. Ewing is shot by an unseen assailant, leading to the catchphrase “Who shot J.R.?”
  • 1989
    Sports Illustrated reports allegations tying baseball player Pete Rose to baseball gambling.
  • 1999
    Bertrand Piccard and Brian Jones become the first to circumnavigate the Earth in a hot air balloon.
  • 2006
    Immigrant workers constructing the Burj Khalifa and a new terminal of Dubai International Airport riot causing $1M in damage.

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