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
- 533 –Byzantine general Belisarius defeats the Vandals, commanded by King Gelimer, at the Battle of Ticameron.
- 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.
- 1868 –Shogunate rebels found Ezo Republic in Hokkaidō.
- 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.
- 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.
- 1965 –Gemini program: Gemini 6A, crewed by Wally Schirra and Thomas Stafford, is launched from Cape Kennedy, Florida. Four orbits later, it achieves the first space rendezvous, with Gemini 7.
- 1970 –South Korean ferry Namyong Ho capsizes off Korean Strait killing 308.
- 1973 –John Paul Getty III, grandson of American billionaire J. Paul Getty, is found alive near Naples, Italy, after being kidnapped by an Italian gang on July 10, 1973.
- 1976 –The oil tanker MV Argo Merchant runs aground near Nantucket, Massachusetts, causing one of the worst marine oil spills in history.
- 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
- 1993 –History of Northern Ireland: The Downing Street Declaration is issued by British Prime Minister John Major and Irish Taoiseach Albert Reynolds.
- 1997 –The Treaty of Bangkok is signed allowing the transformation of Southeast Asia into a Nuclear-Weapon-Free Zone.
- 2001 –The Leaning Tower of Pisa reopens after 11 years and $27,000,000 to fortify it, without fixing its famous lean.
- 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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