About March 21

March 21, 2025 is the 80th day of the year 2025 in the Gregorian calendar. There are 285 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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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 333 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.
  • 1556
    In Oxford, Archbishop of Canterbury Thomas Cranmer is burned at the stake.
  • 1821
    Greek War of Independence: First revolutionary act in the monastery of Agia Lavra, Kalavryta.
  • 1871
    Journalist Henry Morton Stanley begins his trek to find the missionary and explorer David Livingstone.
  • 1913
    Over 360 are killed and 20,000 homes destroyed in the Great Dayton Flood in Dayton, Ohio.
  • 1918
    World War I: The first phase of the German Spring Offensive, Operation Michael, begins.
  • 1925
    Syngman Rhee is removed from office after being impeached as the President of the Provisional Government of the Republic of Korea.
  • 1928
    Charles Lindbergh is presented with the Medal of Honor for the first solo trans-Atlantic flight.
  • 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: Operation Carthage – British planes bomb Gestapo headquarters in Copenhagen, Denmark. They also hit a school and 125 civilians are killed.
  • 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.
  • 1965
    Ranger program: NASA launches Ranger 9 which is the last in a series of unmanned lunar space probes.
  • 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.
  • 1994
    The last episode of the Australian TV series Mother and Son was broadcast.
  • 1997
    In a Tel Aviv, Israel coffee shop, a suicide bomber kills 3 and injures 49.
  • 2002
    In Pakistan, Ahmed Omar Saeed Sheikh along with three other suspects are charged with murder for their part in the kidnapping and killing of Wall Street Journal reporter Daniel Pearl.

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