About April 1

April 1, 2025 is the 91st day of the year 2025 in the Gregorian calendar. There are 274 days remaining until the end of this year. The day of the week is Tuesday.

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

April 1: More About This Day

April 1 is most notable in many countries for being April Fools’ Day.

What Happened On April 1

  • 1572
    In the Eighty Years’ War, the Watergeuzen capture Brielle from the Spaniards, gaining the first foothold on land for what would become the Dutch Republic.
  • 1789
    In New York City, the United States House of Representatives holds its first quorum and elects Frederick Muhlenberg of Pennsylvania as its first House Speaker.
  • 1826
    Samuel Morey patents the internal combustion engine.
  • 1854
    Hard Times begins serialisation in Charles Dickens’ magazine, Household Words.
  • 1867
    Singapore becomes a British crown colony.
  • 1887
    Mumbai Fire Brigade is established.
  • 1891
    The Wrigley Company is founded in Chicago, Illinois.
  • 1908
    The Territorial Force (renamed Territorial Army in 1920) is formed as a volunteer reserve component of the British Army.
  • 1918
    The Royal Air Force is created by the merger of the Royal Flying Corps and the Royal Naval Air Service.
  • 1919
    The Staatliches Bauhaus school was founded by Walter Gropius in Weimar.
  • 1922
    Six Irish Catholic civilians are shot and beaten-to-death by a gang of policemen in Belfast, Northern Ireland.
  • 1933
    English cricketer Wally Hammond set a record for the highest individual Test innings of 336 not out, during a Test match against New Zealand.
  • 1941
    A military coup in Iraq overthrows the regime of 'Abd al-Ilah and installs Rashid Ali as Prime Minister.
  • 1949
    The 26 counties of the Irish Free State become the Republic of Ireland.
  • 1957
    The BBC broadcasts the spaghetti tree hoax on its current affairs programme Panorama.
  • 1969
    The Hawker Siddeley Harrier enters service with the Royal Air Force.
  • 1970
    President Richard Nixon signs the Public Health Cigarette Smoking Act into law, requiring the Surgeon General’s warnings on tobacco products and banning cigarette advertisements on television and radio in the United States, starting on January 1, 1971.
  • 1973
    Project Tiger, a tiger conservation project, is launched in the Corbett National Park, India.
  • 2006
    The Serious Organised Crime Agency, dubbed the “British FBI”, is created in the United Kingdom.
  • 2009
    Croatia and Albania join NATO.

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