What are the important events that happened on September 23? Here are historical events, facts, and some myths about this day.

September 23: Facts & Myths About This Day

September 23 is the 266^th day of the year 2025 in the Gregorian calendar. There are 99 days remaining until the end of this year. The day of the week is Tuesday.

Under the Julian calendar, this day is September 10, 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, 488,496 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 ‘dihectahexacontahexagon’ 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 147 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 4,659 days since this fabled cataclysmic event.

September 23: This Day In History

It is frequently the day of the Autumnal Equinox in the Northern Hemisphere and the day of the Vernal Equinox in the Southern Hemisphere.

September 23 Historical Events

• 1779 –
  American Revolution: a squadron commanded by John Paul Jones on board the USS Bonhomme Richard wins the Battle of Flamborough Head, off the coast of England, against two British warships.
• 1909 –
  The Phantom of the Opera (original title: Le Fantôme de l'Opéra), a novel by French writer Gaston Leroux, is first published as a serialization in Le Gaulois.
• 1938 –
  Mobilization of the Czechoslovak army in response to the Munich Crisis.
• 1942 –
  World War II: First day of the September Matanikau action on Guadalcanal as United States Marine Corps forces attack Imperial Japanese Army units along the Matanikau River.
• 1943 –
  World War II: The Nazi puppet state the Italian Social Republic is founded.
• 1952 –
  Richard Nixon makes his “Checkers speech”.
• 1959 –
  The MS Princess of Tasmania, Australia’s first passenger roll-on/roll-off diesel ferry, makes her maiden voyage across Bass Strait.
• 1972 –
  Philippine President Ferdinand Marcos announces over television and radio the implementation of martial law.
• 1983 –
  Gulf Air Flight 771 is bombed, killing all 117 people on board.
• 2008 –
  Kauhajoki school shooting: Matti Saari kills 10 people before committing suicide.

Who were born on September 23?

• 1906 –
  Bardu Ali, American jazz and rhythm and blues singer and guitarist, and musical promoter(d. 1995)
• 1937 –
  Jacques Poulin, Canadian novelist
• 1941 –
  Simon Nolet, Canadian ice hockey player
• 1944 –
  Eric Bogle, British/Australian singer and songwriter
• 1949 –
  Floella Benjamin(Baroness Benjamin), British actress, authour, television presenter, business woman and politician
• 1958 –
  Marvin Lewis, American football coach
• 1972 –
  Karl Pilkington, British radio personality
• 1974 –
  Matt Hardy, American professional wrestler
• 1983 –
  Joffery Lupul, Canadian ice hockey player
• 1983 –
  Märt Israel, Estonian discus thrower

Who died on September 23?

• 1573 –
  Azai Hisamasa, Japanese warlord (b. 1524)
• 1738 –
  Herman Boerhaave, Dutch humanist and physician (b. 1668)
• 1873 –
  Jean Chacornac, French astronomer (b. 1823)
• 1917 –
  Werner Voss, German World War I pilot (b. 1897)
• 1944 –
  Jakob Schaffner, Swiss novelist (b. 1875)
• 1994 –
  Madeleine Renaud, French theater and film actress (b. 1900)
• 1999 –
  Ivan Goff, Australian screenwriter (b. 1910)
• 2001 –
  Ron Hewitt, Welsh footballer (b. 1928)
• 2003 –
  Yuri Senkevich, Russian TV anchorman (b. 1937)
• 2010 –
  Malcolm Douglas, Australian conservationist (b. 1941)