What are the important events that happened on September 9? Here are historical events, facts, and some myths about this day.

September 9: Facts & Myths About This Day

September 9 is the 252^nd day of the year 2025 in the Gregorian calendar. There are 113 days remaining until the end of this year. The day of the week is Tuesday.

Under the Julian calendar, this day is August 27, 2025 – a Tuesday. Both day of the week are the same but did you notice the difference with the Gregorian calendar?

When this day started, 1,757,376,000 seconds 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 ‘dihectapentacontadigon’ day.

Virgo is the zodiac sign of a person born on this day. Sapphire is the modern birthstone for this month. Agate is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 161 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 4,645 days since this fabled cataclysmic event.

September 9 Historical Events

• 337 –
  Constantine II, Constantius II, and Constans I succeed their father Constantine I as co-emperors. The Roman Empire is divided between the three Augusti.
• 1379 –
  Treaty of Neuberg, splitting the Austrian Habsburg lands between the Habsburg Dukes Albert III and Leopold III.
• 1791 –
  Washington, D.C., the capitol of the United States, is named after President George Washington.
• 1850 –
  California is admitted as the thirty-first U.S. state.
• 1850 –
  The Compromise of 1850 transfers a third of Texas’s claimed territory (now parts of Colorado, Kansas, New Mexico, Oklahoma, and Wyoming) to federal control in return for the U.S. federal government assuming $10 million of Texas’s pre-annexation debt.
• 1926 –
  The U.S. National Broadcasting Company is formed.
• 1943 –
  World War II: The Allies land at Salerno and Taranto, Italy.
• 1947 –
  First actual case of a computer bug being found: a moth lodges in a relay of a Harvard Mark II computer at Harvard University.
• 1970 –
  A British airliner is hijacked by the Popular Front for the Liberation of Palestine and flown to Dawson’s Field in Jordan.
• 1993 –
  The Palestine Liberation Organization officially recognizes Israel as a legitimate state.

Who were born on September 9?

• 1427 –
  Thomas de Ros, 10th Baron de Ros, English politician (d. 1464)
• 1878 –
  Adelaide Crapsey, American poet (d. 1914)
• 1892 –
  Tsuru Aoki, Japanese-born American actress (d. 1961)
• 1930 –
  Frank Lucas, Drug Lord
• 1952 –
  Angela Cartwright, American actress
• 1963 –
  Chris Coons, American politician, junior senator of Delaware
• 1977 –
  Chae Jung An, South Korean actress and singer
• 1977 –
  Lambros Lambrou, Greek-Cypriot footballer
• 1980 –
  Todd Coffey, American baseball player
• 1986 –
  Luc Mbah a Moute, Cameroonian basketball player

Who died on September 9?

• 1513 –
  King James IV of Scotland (b. 1473)
• 1907 –
  Ernest Roland Wilberforce, English bishop (b. 1840)
• 1941 –
  Hans Spemann, German embryologist, recipient of the Nobel Prize in Physiology or Medicine (b. 1869)
• 1976 –
  Mao Zedong, Chinese communist leader (b. 1893)
• 1976 –
  Yehezkel Abramsky, Russian-born rabbi, head of the London Beth Din for 17 years (b. 1886)
• 1978 –
  Jack Warner, Canadian-born American film executive (b. 1892)
• 1993 –
  Helen O'Connell, American singer, actress and dancer (b. 1920)
• 2000 –
  Julian Critchley, British politician (b. 1930)
• 2003 –
  Edward Teller, Hungarian-born physicist (b. 1908)
• 2008 –
  Richard Monette, Canadian actor and director (b. 1944)