About April 17

April 17, 2025 is the 107th day of the year 2025 in the Gregorian calendar. There are 258 days remaining until the end of this year. The day of the week is Thursday.

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

What Happened On April 17

  • 69
    After the First Battle of Bedriacum, Vitellius becomes Roman Emperor.
  • 1080
    King of Denmark Harald III dies and is succeeded by Canute IV, who would later be the first Dane to be canonized.
  • 1397
    Geoffrey Chaucer tells the Canterbury Tales for the first time at the court of Richard II. Chaucer scholars have also identified this date (in 1387) the start of the book’s pilgrimage to Canterbury.
  • 1555
    After 18 months of siege, Siena surrenders to the Florentine-Imperial army. The Republic of Siena is incorporated into the Grand Duchy of Tuscany.
  • 1797
    Citizens of Verona, Italy, begin an eight-day rebellion against the French occupying forces, which will end unsuccessfully.
  • 1797
    Sir Ralph Abercromby attacks San Juan, Puerto Rico in what would be one of the largest invasions of the Spanish territories in America.
  • 1907
    The Ellis Island immigration center processes 11,747 people, more than on any other day.
  • 1941
    World War II: The Kingdom of Yugoslavia surrenders to Germany.
  • 1942
    French prisoner of war General Henri Giraud escapes from his castle prison in Festung Königstein.
  • 1944
    Forces of the Communist-controlled Greek People’s Liberation Army attack the smaller National and Social Liberation resistance group, which surrenders. Its leader Dimitrios Psarros is murdered.
  • 1945
    Brazilian forces liberate the town of Montese, Italy, from German Nazi forces.
  • 1946
    Syria obtains its Independence from the French occupation.
  • 1949
    At midnight 26 Irish counties officially leave the British Commonwealth. A 21-gun salute on O'Connell Bridge, Dublin, ushers in the Republic of Ireland.
  • 1951
    The Peak District becomes the United Kingdom’s first National Park.
  • 1961
    Bay of Pigs Invasion: A group of CIA financed and trained Cuban exiles lands at the Bay of Pigs in Cuba with the aim of ousting Fidel Castro.
  • 1964
    Jerrie Mock becomes the first woman to circumnavigate the world by air.
  • 1975
    The Cambodian Civil War ends. The Khmer Rouge captures the capital Phnom Penh and Cambodian government forces surrender.
  • 1982
    Patriation of the Canadian constitution in Ottawa by Proclamation of Queen Elizabeth II, Queen of Canada.
  • 1986
    The Three Hundred and Thirty Five Years’ War between the Netherlands and the Isles of Scilly ends.
  • 2006
    Sami Hammad, a Palestinian suicide bomber, detonates an explosive device in Tel Aviv, killing 11 people and injuring 70.

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