About April 20

April 20, 2025 is the 110th day of the year 2025 in the Gregorian calendar. There are 255 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. Diamond is the modern birthstone for this month. Opal is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 303 days remaining before the start of the next Chinese New Year.

What Happened On April 20

  • 1534 –
    Jacques Cartier begins the voyage during which he discovers Canada and Labrador.
  • 1535 –
    The Sun dog phenomenon observed over Stockholm and depicted in the famous painting “Vädersolstavlan”.
  • 1657 –
    Admiral Robert Blake destroys a Spanish silver fleet under heavy fire at Santa Cruz de Tenerife.
  • 1689 –
    The former King James II of England, now deposed, lays siege to Derry.
  • 1818 –
    The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
  • 1836 –
    U.S. Congress passes an act creating the Wisconsin Territory.
  • 1862 –
    Louis Pasteur and Claude Bernard complete the first pasteurization tests.
  • 1871 –
    The Civil Rights Act of 1871 becomes law.
  • 1912 –
    Opening day for baseball’s Tiger Stadium in Detroit, Michigan, and Fenway Park in Boston, Massachusetts.
  • 1914 –
    19 men, women, and children die in the Ludlow Massacre during a Colorado coal-miner’s strike.
  • 1922 –
    The Soviet government creates South Ossetian Autonomous Oblast within Georgian SSR.
  • 1926 –
    Western Electric and Warner Bros. announce Vitaphone, a process to add sound to film.
  • 1945 –
    World War II: US troops capture Leipzig, Germany, only to later cede the city to the Soviet Union.
  • 1946 –
    The League of Nations officially dissolves, giving most of its power to the United Nations.
  • 1964 –
    BBC Two launches with a power cut because of the fire at Battersea Power Station.
  • 1980 –
    Climax of Berber Spring in Algeria as hundreds of Berber political activists are arrested.
  • 1984 –
    The Good Friday Massacre, an extremely violent ice hockey playoff game, is played in Montreal, Canada.
  • 1985 –
    The ATF raids The Covenant, The Sword, and the Arm of the Lord compound in northern Arkansas.
  • 1998 –
    German terrorist group the Red Army Faction announces their dissolution after 28 years.
  • 1999 –
    Columbine High School massacre: Eric Harris and Dylan Klebold kill 13 people and injure 24 others before committing suicide at Columbine High School in Jefferson County, Colorado.

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