About March 31

March 31, 2025 is the 90th day of the year 2025 in the Gregorian calendar. There are 275 days remaining until the end of this year. The day of the week is Monday.

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

What Happened On March 31

  • 1146
    Bernard of Clairvaux preaches his famous sermon in a field at Vézelay, urging the necessity of a Second Crusade. Louis VII is present, and joins the Crusade.
  • 1717
    A sermon on “The Nature of the Kingdom of Christ” by Benjamin Hoadly, the Bishop of Bangor, provokes the Bangorian Controversy.
  • 1774
    American Revolutionary War: The Kingdom of Great Britain orders the port of Boston, Massachusetts closed pursuant to the Boston Port Act.
  • 1854
    Commodore Matthew Perry signs the Treaty of Kanagawa with the Japanese government, opening the ports of Shimoda and Hakodate to American trade.
  • 1877
    The family with samurai antecedents that responded to the Saigō army in Ōita Nakatsu, rebels.
  • 1889
    The Eiffel Tower is officially opened.
  • 1917
    The United States takes possession of the Danish West Indies after paying $25 million to Denmark, and renames the territory the United States Virgin Islands.
  • 1918
    Daylight saving time goes into effect in the United States for the first time.
  • 1921
    The Royal Australian Air Force is formed.
  • 1931
    An earthquake destroys Managua, Nicaragua, killing 2,000.
  • 1933
    The Civilian Conservation Corps is established with the mission of relieving rampant unemployment.
  • 1942
    World War II: Japanese forces invade Christmas Island, then a British possession.
  • 1949
    The Dominion of Newfoundland joins the Canadian Confederation and becomes the 10th Province of Canada.
  • 1958
    In the Canadian federal election, the Progressive Conservatives, led by John Diefenbaker, win the largest percentage of seats in Canadian history, with 208 seats of 265.
  • 1959
    The 14th Dalai Lama, Tenzin Gyatso, crosses the border into India and is granted political asylum.
  • 1966
    The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
  • 1985
    The first WrestleMania, the biggest wrestling event from the WWE (then the WWF), takes place in Madison Square Garden in New York.
  • 1986
    Six metropolitan county councils are abolished in England.
  • 1990
    200,000 protestors take to the streets of London to protest against the newly introduced Poll Tax.
  • 1991
    Georgian independence referendum, 1991: nearly 99 percent of the voters support the country’s independence from the Soviet Union.

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