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
- 307 –After divorcing his wife Minervina, Constantine marries Fausta, the daughter of the retired Roman Emperor Maximian.
- 1492 –Queen Isabella of Castille issues the Alhambra decree, ordering her 150,000 Jewish subjects to convert to Christianity or face expulsion.
- 1822 –The massacre of the population of the Greek island of Chios by soldiers of the Ottoman Empire following an attempted rebellion, depicted by the French artist Eugène Delacroix.
- 1854 –Commodore Matthew Perry signs the Treaty of Kanagawa with the Japanese government, opening the ports of Shimoda and Hakodate to American trade.
- 1903 –Richard Pearse allegedly makes a powered flight in an early aircraft.
- 1906 –The Intercollegiate Athletic Association of the United States (later the National Collegiate Athletic Association) is established to set rules for college sports in the United States.
- 1910 –Six North Staffordshire Pottery towns federate to form modern Stoke-on-Trent.
- 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 –TWA Flight 599 crashes near Bazaar, Kansas killing 8 including Knute Rockne, head football coach at the University of Notre Dame
- 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.
- 1965 –An Iberia Airlines Convair 440 crashes into the sea on approach to Tangier, killing 47 of 51 occupants.
- 1966 –The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
- 1979 –The last British soldier leaves the Maltese Islands. Malta declares its Freedom Day (Jum il-Helsien).
- 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.
- 1995 –Selena, an American singer, was murdered by her friend and employee of her boutiques Yolanda Saldívar who was embezzling money from the establishments. The event was named “Black Friday” by Hispanics.
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