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

  • 717
    Battle of Vincy between Charles Martel and Ragenfrid.
  • 1152
    Annulment of the marriage of King Louis VII of France and Queen Eleanor of Aquitaine.
  • 1413
    Henry V becomes King of England.
  • 1556
    In Oxford, Archbishop of Canterbury Thomas Cranmer is burned at the stake.
  • 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.
  • 1801
    The Battle of Alexandria is fought between British and French forces near the ruins of Nicopolis in Egypt.
  • 1857
    An earthquake in Tokyo, Japan kills over 100,000.
  • 1871
    Journalist Henry Morton Stanley begins his trek to find the missionary and explorer David Livingstone.
  • 1871
    Otto von Bismarck is appointed Chancellor of the German Empire.
  • 1921
    The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of War Communism.
  • 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: British troops liberate Mandalay, Burma.
  • 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.
  • 1980
    US President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet Invasion of Afghanistan.
  • 1989
    Sports Illustrated reports allegations tying baseball player Pete Rose to baseball gambling.
  • 1990
    Namibia becomes independent after 75 years of South African rule.
  • 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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