September 9th, 1231

Born on September 9th, 1231

Age in days, weeks and months
Wow, over 289,000 days old!

Why not celebrate an alternative birthday? In 477 days, exactly on September 6th, 2025, people who were born on September 9th, 1231 will be 290,000 days old!

... in seconds, minutes and hours

What happened on September 9th?

September 9th, 2010

A natural-gas pipeline in San Bruno, California, exploded and "shot a fireball more than 1,000 feet (300 m) in the air", killing eight people.

September 9th, 1999

The first banknotes of the Portrait Series of the Singapore dollar were introduced by the Board of Commissioners of Currency.

September 9th, 1971

Imagine, the second solo album by John Lennon (pictured), was released.

September 9th, 1969

Allegheny Airlines Flight 853 collided in mid-air with a Piper PA-28 Cherokee flown by a student pilot near Fairland, Indiana, destroying both aeroplanes and killing all 83 occupants of both aircraft.

September 9th, 1939

World War II: About 3,000 Polish Army troops began a nearly month-long defence of the Hel Peninsula during the German invasion of Poland.

September 9th, 1892

At the Lick Observatory in California, Edward Emerson Barnard discovered Amalthea (pictured), a moon of Jupiter and the last natural satellite to be discovered by visual observation.

September 9th, 1796

French Revolutionary Wars: A naval engagement between French and British fleets off the coast of Sumatra ended inconclusively.

September 9th, 1791

The commissioners overseeing the construction of the United States' new capital city named it Washington, D.C., in honor of the first president.

September 9th, 1493

Ottoman wars in Europe: A large Croatian army intercepted Ottoman forces returning to the Sanjak of Bosnia, but was defeated.

September 9th, 1320

Byzantine forces defeated Achaean troops at the Battle of Saint George, taking control of the Arcadia region of Greece.

September 9th, 0337

After disposing of all relatives who possibly held a claim to the throne, Constantine II, Constantius II and Constans became Roman co-emperors.

September 9th, 2001

Two al-Qaeda attackers assassinate Ahmad Shah Massoud, a pivotal Afghan resistance leader, two days before the September 11th attacks in the United States.

September 9th, 1493

Christopher Columbus, with 17 ships and 1,200 men, sails on second voyage from Cadiz.

September 9th, 1488

Anne becomes sovereign Duchess of Brittany, becoming a central figure in the struggle for influence that leads to the union of Brittany and France.

September 9th, 1320

In the Battle of Saint George, the Byzantines under Andronikos Asen ambush and defeat the forces of the Principality of Achaea, securing possession of Arcadia.

Birthdays
... of famous people, actors, celebrities and stars on September 9th

Same Day
Who's birthday is on September 9th?

32

Yang Yang

Chinese actor

*September 9th, 1991, Shanghai

62

Jan-Eric Antonsson

Badminton player

*September 9th, 1961, Karlskrona

24

Bilal Hassani

French-Moroccan singer-songwriter and vlogger

*September 9th, 1999, Orsay

56

Akshay Kumar

Indian actor (born 1967)

*September 9th, 1967, New Delhi

38

Luka Modrić

Croatian footballer (born 1985)

*September 9th, 1985, Zadar

78

Ingrid Matthäus-Maier

German politician

*September 9th, 1945, Werlte

88

Cliff Robertson

American actor (1923–2011)

*September 9th, 1923, La Jolla †September 10th, 2011, Stony Brook

57

Adam Sandler

American comedian and actor (born 1966)

*September 9th, 1966, Brooklyn

72

Tom Wopat

American actor

*September 9th, 1951, Lodi

47

Emma de Caunes

French actress

*September 9th, 1976, 14th arrondissement of Paris

28

André Rudersdorf

German racing driver

*September 9th, 1995, Hadamar

57

Michel Muller

French actor, screenwriter, director

*September 9th, 1966, Vienna

90

John Gorton

Australian politician, 19th Prime Minister of Australia (1911–2002)

*September 9th, 1911, Melbourne †May 19th, 2002, Sydney

57

Armand-Jean du Plessis, duc de Richelieu

French clergyman, cardinal, noble and statesman (1585-1642)

*September 9th, 1585, Paris †December 4th, 1642, Paris

55

Lila Downs

Mexican American singer-songwriter

*September 9th, 1968, Oaxaca

44

John Curry

British figure skater (1949–1994)

*September 9th, 1949, Birmingham †April 15th, 1994, Binton

68

Edward Hibbert

British actor

*September 9th, 1955, Long Island

63

Hugh Grant

British actor (born 1960)

*September 9th, 1960, Charing Cross Hospital

86

Howard Dietz

American publicist, lyricist, and librettist (1896-1983)

*September 9th, 1896, New York City †July 30th, 1983, New York City

84

Reuven Rivlin

10th President of Israel

*September 9th, 1939, Jerusalem

80

Hélène Vincent

French actress

*September 9th, 1943, 14th arrondissement of Paris

48

Michael Bublé

Canadian singer, songwriter and actor

*September 9th, 1975, Burnaby

43

Michelle Williams

American actress

*September 9th, 1980, Kalispell

66

Roberto Noble

Argentine politician, journalist and publisher, founder of Argentinian newspaper Clarín (1902-1969)

*September 9th, 1902, La Plata †January 12th, 1969, Villa del Totoral

93

Oscar Luigi Scalfaro

9th President of Italy (1918-2012)

*September 9th, 1918, Novara †January 29th, 2012, Rome

61

Luigi Galvani

Italian physician, physicist, and philosopher

*September 9th, 1737, Bologna †December 4th, 1798, Bologna

78

Pablo Alarcón

Argentinean television actor

*September 9th, 1945, Pellegrini

64

Éric Serra

French film composer

*September 9th, 1959, Saint-Mandé

93

Jimmy Perry

English writer, scriptwriter, producer, author and actor (1923-2016)

*September 9th, 1923, Barnes †October 23rd, 2016, London

49

Brittany Petros

American actress

*September 9th, 1974, Robbinsdale

28

Isabelle Caro

French actress and model

*September 9th, 1982, Aubergenville †November 18th, 2010, 18th arrondissement of Paris

36

Alex Song

Cameroonian and French footballer

*September 9th, 1987, Douala

41

Cesare Pavese

Italian writer, literary critic, and translator

*September 9th, 1908, Santo Stefano Belbo †August 27th, 1950, Turin

85

Daniel Carleton Gajdusek

Nobel Prize-winning medical researcher

*September 9th, 1923, Yonkers †December 12th, 2008, Tromsø Municipality

87

Ruth Pfau

German-Pakistani physician and member of a religious order

*September 9th, 1929, Leipzig †August 10th, 2017, Karachi

87

Chaim Topol

Israeli actor (1935-2023)

*September 9th, 1935, Tel Aviv †March 8th, 2023, Tel Aviv

68

Thomas Hutchinson

Last civilian Governor of the Province of Massachusetts Bay, historian (1711-1780)

*September 9th, 1711, Boston †June 3rd, 1780, London

74

Susilo Bambang Yudhoyono

6th President of Indonesia (2004–2014)

*September 9th, 1949, Pacitan

38

Martin Johnson

American singer-songwriter, frontman of Boys Like Girls

*September 9th, 1985, Andover

70

Dennis M. Ritchie

American computer scientist, co-inventor of the Unix operating system and the C programming language

*September 9th, 1941, Bronxville †October 12th, 2011, Berkeley Heights

Birthdays of famous people

Public holidays on September 9th

Fixed holidays (Christian feast day) which are celebrated on September 9th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1231 is a normal year and no leap year.

Calendar
September 1231