About December 15

December 15, 2025 is the 349th day of the year 2025 in the Gregorian calendar. There are 16 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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Sagittarius is the sun sign of a person born on this day. Turquoise is the modern birthstone for this month. Onyx is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 64 days remaining before the start of the next Chinese New Year.

What Happened On December 15

  • 1167
    Sicilian chancellor Stephen du Perche moves the royal court to Messina to prevent a rebellion.
  • 1256
    Hulagu Khan captures and destroys the Hashshashin stronghold at Alamut in present-day Iran as part of the Mongol offensive on Islamic southwest Asia.
  • 1791
    The United States Bill of Rights becomes law when ratified by the Virginia General Assembly.
  • 1864
    In the Battle of Nashville, Union forces under George H. Thomas almost completely destroy the Army of Tennessee under John B. Hood.
  • 1906
    The London Underground’s Great Northern, Piccadilly and Brompton Railway opens.
  • 1914
    A gas explosion at Mitsubishi Hojyo coal mine, Kyūshū, Japan, kills 687.
  • 1914
    World War I: The Serbian Army recaptures Belgrade from the invading Austro-Hungarian Army.
  • 1939
    Gone with the Wind receives its première at Loew’s Grand Theatre in Atlanta, Georgia, USA.
  • 1945
    Occupation of Japan: General Douglas MacArthur orders that Shinto be abolished as the state religion of Japan.
  • 1961
    In Jerusalem, Adolph Eichmann is sentenced to death after being found guilty of 15 criminal charges, including charges of crimes against humanity, crimes against the Jewish people and membership of an outlawed organization.
  • 1967
    The Silver Bridge collapses, killing 46 people.
  • 1970
    South Korean ferry Namyong Ho capsizes off Korean Strait killing 308.
  • 1970
    Soviet spacecraft Venera 7 successfully land on Venus. It is the first successful soft landing on another planet
  • 1973
    The American Psychiatric Association votes 13–0 to remove homosexuality from its official list of psychiatric disorders, the DSM-II.
  • 1978
    U.S. President Jimmy Carter announces that the United States will recognize the People’s Republic of China and cut off all relations with Taiwan
  • 1997
    A chartered Tupolev TU-154 from Tajikistan crashes in the desert near Sharja, United Arab Emirates airport killing 85.
  • 1997
    The Treaty of Bangkok is signed allowing the transformation of Southeast Asia into a Nuclear-Weapon-Free Zone.
  • 2005
    Introduction of the F-22 Raptor into USAF active service.
  • 2009
    Boeing’s new Boeing 787 Dreamliner makes its maiden flight from Seattle, Washington.
  • 2010
    A boat carrying 90 asylum seekers crashes into rocks off the coast of Christmas Island, Australia, killing at least 30 passengers.

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