What are the important events that happened on December 13? Here are historical events, facts, and some myths about this day.

December 13: Facts & Myths About This Day

December 13 is the 347^th day of the year 2025 in the Gregorian calendar. There are 18 days remaining until the end of this year. The day of the week is Saturday.

Under the Julian calendar, this day is November 30, 2025 – a Saturday. Both day of the week are the same but did you notice the difference with the Gregorian calendar?

When this day started, 490,440 hours has elapsed since midnight of January 1, 1970 – the Unix epoch.

Strange as it may, if we name this day after a polygon then it will be called ‘trihectatetracontaheptagon’ day.

Sagittarius is the zodiac 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 66 days remaining before the start of the next Chinese New Year.

The ancient Maya civilization believes that the end of the world will happen on December 21, 2012. There are now 4,740 days since this fabled cataclysmic event.

December 13 Historical Events

• 1545 –
  Council of Trent begins.
• 1809 –
  Dr. Ephraim McDowell performed the first ovariotomy, removing a 22 pound tumor.
• 1867 –
  Fenian bomb explodes in Clerkenwell, London, killing six.
• 1937 –
  Second Sino-Japanese War: Battle of Nanjing – Nanjing, defended by the National Revolutionary Army under the command of General Tang Shengzhi, falls to the Japanese.
• 1941 –
  World War II: Hungary and Romania declare war on the United States.
• 1943 –
  World War II: The Massacre of Kalavryta by German occupying forces in Greece.
• 1960 –
  While Emperor Haile Selassie I of Ethiopia visits Brazil, his Imperial Bodyguard seizes the capital and proclaim him deposed and his son, Crown Prince Asfa Wossen, Emperor.
• 1981 –
  General Wojciech Jaruzelski declares martial law in Poland to prevent dismantling of the communist system by Solidarity.
• 1988 –
  Palestinian Leader Yasser Arafat gives a speech at the United Nations General Assembly in the Swiss city of Geneva after the United States authorities refused to give him a visa to enter New York.
• 2001 –
  The Indian Parliament Sansad is attacked by terrorists. 15 people are killed, including all the terrorists.

Who were born on December 13?

• 1662 –
  Francesco Bianchini, Italian philosopher and scientist (d. 1729)
• 1935 –
  Lindy McDaniel, American baseball player
• 1943 –
  Ferguson Jenkins, Canadian baseball player
• 1948 –
  Lester Bangs, Rock critic (d. 1982)
• 1949 –
  Tom Verlaine, American singer and guitarist (Television)
• 1975 –
  Matthew LeCroy, American baseball player
• 1980 –
  Satoshi Tsumabuki, Japanese actor
• 1983 –
  Otylia Jędrzejczak, Polish swimmer
• 1985 –
  Laurence Leboeuf, Canadian actress
• 1985 –
  Michael Bumpus, American football player

Who died on December 13?

• 1048 –
  Abū Rayḥān al-Bīrūnī, Persian mathematician (b. 973)
• 1250 –
  Frederick II, Holy Roman Emperor (b. 1194)
• 1565 –
  Conrad Gessner, Swiss naturalist (b. 1516)
• 1935 –
  Victor Grignard, French chemist, Nobel laureate (b. 1871)
• 1940 –
  Jacques-Arsène d'Arsonval, French physicist (b. 1851)
• 1947 –
  Nicholas Roerich, Russian-born painter (b. 1874)
• 1979 –
  Jon Hall, American actor (b. 1915)
• 1983 –
  Nichita Stănescu, Romanian poet (b. 1933)
• 2004 –
  David Wheeler, English computer scientist (b. 1927)
• 2007 –
  Mark Partridge, Rhodesian politician (b. 1922)