About October 27

October 27, 2025 is the 300th day of the year 2025 in the Gregorian calendar. There are 65 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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Scorpio is the sun sign of a person born on this day. Opal is the modern birthstone for this month. Jasper is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 113 days remaining before the start of the next Chinese New Year.

What Happened On October 27

  • 312
    Constantine the Great is said to have received his famous Vision of the Cross.
  • 710
    Saracen invasion of Sardinia.
  • 1275
    Traditional founding of the city of Amsterdam.
  • 1524
    Italian Wars: The French troops lay siege to Pavia.
  • 1553
    Condemned as a heretic, Michael Servetus is burned at the stake just outside Geneva.
  • 1644
    Second Battle of Newbury in the English Civil War.
  • 1810
    United States annexes the former Spanish colony of West Florida.
  • 1827
    Bellini’s third opera Il pirata is premiered at Teatro alla Scala di Milano
  • 1914
    World War I: The British super-dreadnought battleship HMS Audacious (23,400 tons), is sunk off Tory Island, north-west of Ireland, by a minefield laid by the armed German merchant-cruiser Berlin.
  • 1916
    Battle of Segale: Negus Mikael, marching on the Ethiopian capital in support of his son Emperor Iyasus V, is defeated by Fitawrari abte Giyorgis, securing the throne for Empress Zauditu.
  • 1930
    ratifications exchanged in London, for the first London Naval Treaty signed in April modifying the 1925 Washington Naval Treaty and the arms limitation treaty’s modified provisions go into effect immediately; further limiting the expensive naval arms race between its five signatories.
  • 1948
    Léopold Sédar Senghor founds the Senegalese Democratic Bloc.
  • 1958
    Iskander Mirza, the first President of Pakistan, is deposed in a bloodless coup d'état by General Ayub Khan, who had been appointed the enforcer of martial law by Mirza 20 days earlier.
  • 1962
    A plane carrying Enrico Mattei, post-war Italian administrator, crashes in mysterious circumstances.
  • 1964
    Ronald Reagan delivers a speech on behalf of Republican candidate for president, Barry Goldwater. The speech launched his political career and came to be known as “A Time for Choosing”.
  • 1981
    The Soviet submarine U 137 runs aground on the east coast of Sweden.
  • 1986
    The British government suddenly deregulates financial markets, leading to a total restructuring of the way in which they operate in the country, in an event now referred to as the Big Bang.
  • 1994
    Gliese 229B is the first Substellar Mass Object to be unquestionably identified.
  • 1995
    Latvia applies for membership in the European Union.
  • 2005
    The SSETI Express micro-satellite is successfully launched from the Plesetsk Cosmodrome.

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