About March 31

March 31, 2024 is the 91st day of the year 2024 in the Gregorian calendar. There are 275 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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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 304 days remaining before the start of the next Chinese New Year.

What Happened On March 31

  • 307
    After divorcing his wife Minervina, Constantine marries Fausta, the daughter of the retired Roman Emperor Maximian.
  • 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.
  • 1492
    Queen Isabella of Castille issues the Alhambra decree, ordering her 150,000 Jewish subjects to convert to Christianity or face expulsion.
  • 1866
    The Spanish Navy bombs the harbor of Valparaíso, Chile.
  • 1903
    Richard Pearse allegedly makes a powered flight in an early aircraft.
  • 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.
  • 1918
    Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed.
  • 1921
    The Royal Australian Air Force is formed.
  • 1931
    TWA Flight 599 crashes near Bazaar, Kansas killing 8 including Knute Rockne, head football coach at the University of Notre Dame
  • 1942
    World War II: Japanese forces invade Christmas Island, then a British possession.
  • 1945
    World War II: a defecting German pilot delivers a Messerschmitt Me 262A-1, the world’s first operational jet-powered fighter aircraft, to the Americans, the first to fall into Allied hands.
  • 1951
    Remington Rand delivers the first UNIVAC I computer to the United States Census Bureau.
  • 1957
    Elections to the Territorial Assembly of the French colony Upper Volta are held. After the elections PDU and MDV form a government.
  • 1980
    The Chicago, Rock Island and Pacific railroad operates its final train after being ordered to liquidate its assets because of bankruptcy and debts owed to creditors.
  • 1985
    The first WrestleMania, the biggest wrestling event from the WWE (then the WWF), takes place in Madison Square Garden in New York.
  • 1986
    A Mexicana Boeing 727 en route to Puerto Vallarta erupts in flames and crashes in the mountains northwest of Mexico City, killing 166.
  • 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.
  • 1994
    Human evolution: The journal Nature reports the finding in Ethiopia of the first complete Australopithecus afarensis skull.

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