September 20th, 1431

Born on September 20th, 1431

Age in days, weeks and months
Wow, over 216,000 days old!

Why not celebrate an alternative birthday? In 553 days, exactly on November 4th, 2025, people who were born on September 20th, 1431 will be 217,000 days old!

... in seconds, minutes and hours

What happened on September 20th?

September 20th, 2011

The United States military ended its "don't ask, don't tell" policy, consequently allowing gay and lesbian people to serve openly.

September 20th, 2008

An explosive-laden truck detonated in front of the Marriott hotel in Islamabad, Pakistan, killing 54 people and injuring 266 others.

September 20th, 1997

Hurricane Erika, the strongest and longest-lasting hurricane of the 1997 Atlantic hurricane season, dissipated after causing flooding and power outages throughout Puerto Rico.

September 20th, 1988

British prime minister Margaret Thatcher gave a landmark speech at the Belfry of Bruges, Belgium, against federalism in the European Economic Community.

September 20th, 1984

The Cosby Show, which became one of three U.S. television shows to have the highest ratings five years in a row, premiered with its pilot episode.

September 20th, 1977

A series of celestial phenomena of disputed nature was observed in the western Soviet Union, Finland and Denmark.

September 20th, 1973

Billie Jean King defeated Bobby Riggs in straight sets at the Astrodome in Houston, Texas, in an internationally televised tennis match dubbed the "Battle of the Sexes".

September 20th, 1971

Hurricane Irene (satellite image pictured) moved into the Pacific Ocean from the Atlantic, making it the first actively tracked tropical cyclone to do so.

September 20th, 1967

L. Ron Hubbard, the founder of Scientology, announced the story of Xenu in a taped lecture sent to all Scientologists.

September 20th, 1944

Second World War: Allied forces captured San Marino from the German Army.

September 20th, 1943

World War II: Australian troops led by Gordon Grimsley King defeated Imperial Japanese forces at the Battle of Kaiapit in New Guinea.

September 20th, 1920

Irish War of Independence: British auxiliary police officers known as Black and Tans went on a rampage in Balbriggan, burning more than fifty homes and businesses and killing two people.

September 20th, 1792

The French Army achieved its first major victory of the War of the First Coalition at the Battle of Valmy.

September 20th, 1697

The first of a series of treaties comprising the Peace of Ryswick was signed between France and the Grand Alliance, ending the Nine Years' War.

September 20th, 1643

First English Civil War: The First Battle of Newbury was fought in Berkshire; Parliamentarian forces were allowed to pass Royalist troops to retreat the next morning.

Birthdays
... of famous people, actors, celebrities and stars on September 20th

Same Day
Who's birthday is on September 20th?

30

Alexis Sánchez

Futbolista Chileno

*September 20th, 1993, Gladbeck

37

Aldis Hodge

American actor

*September 20th, 1986, Onslow County

58

Poul-Erik Høyer Larsen

Danish badminton player and administrator

*September 20th, 1965, Esbønderup

87

Hedwig Dohm

German feminist, writer, and opinion journalist

*September 20th, 1831, Berlin †June 1st, 1919, Berlin

16

Unnati Hooda

Badminton player

*September 20th, 2007, Rohtak

79

Alberto Carneiro

Portuguese artist

*September 20th, 1937, São Mamede de Coronado †April 15th, 2017, Porto

89

Sophia Loren

Italian actress

*September 20th, 1934, Rome

75

George R. R. Martin

American writer and television producer

*September 20th, 1948, Bayonne

26

Monique

Lithuanian singer

*September 20th, 1997, Širvintos

57

Nuno Bettencourt

Portuguese guitarist

*September 20th, 1966, Praia da Vitória

39

Brian Joubert

French figure skater

*September 20th, 1984, Poitiers

74

Sabine Azéma

French actress and director

*September 20th, 1949, Paris

83

Tarō Asō

Japanese politician (born 1940)

*September 20th, 1940, Iizuka

85

Anne Meara

American comedian and actress (1929–2015)

*September 20th, 1929, Brooklyn †May 23rd, 2015, Manhattan

75

Wolfgang Gruner

German cabaret artist, actor and director (1926-2002)

*September 20th, 1926, Rathenow †March 16th, 2002, Berlin

50

Philip I, Count of Hanau-Münzenberg

German noble

*September 20th, 1449, Windecken †August 26th, 1500, Hanau

79

Hans Scharoun

German architect (1893-1972)

*September 20th, 1893, Bremen †November 25th, 1972, West Berlin

83

Jim Taylor

American footballer (1935-2018)

*September 20th, 1935, Baton Rouge †October 13th, 2018, Baton Rouge

57

Chulalongkorn

King of Siam (1853-1910)

*September 20th, 1853, Grand Palace †October 23rd, 1910, Amphorn Sathan Residential Hall

48

Jean-Jacques Dessalines

Leader of Haitian Revolution and first ruler of independent Haiti (1758-1806)

*September 20th, 1758, Plaine-du-Nord †October 17th, 1806, Port-au-Prince

48

Jean-Jacques Olier

French Catholic priest (1608-1657)

*September 20th, 1608, Paris †April 2nd, 1657, Paris

84

Ernesto Teodoro Moneta

Italian journalist, nationalist, revolutionary soldier and later a pacifist and Nobel Peace Prize Laureate

*September 20th, 1833, Milan †January 30th, 1918, Milan

59

Maggie Cheung

Hong Kong actress

*September 20th, 1964, Hong Kong

48

Juan Pablo Montoya

Colombian racing driver; former Formula One driver

*September 20th, 1975, Bogotá

35

Khabib Nurmagomedov

Russian professional mixed martial artist

*September 20th, 1988, Sildi

90

Upton Sinclair

American writer (1878–1968)

*September 20th, 1878, Baltimore †November 25th, 1968, Bound Brook

67

Monica Zetterlund

Swedish singer and actress

*September 20th, 1937, Hagfors parish †May 12th, 2005, Johannes parish

20

Philip Zhao

American actor

*September 20th, 2003, Rockville

77

Fritz-Christoph Duden

German politician (1939-2017)

*September 20th, 1939, Schneverdingen †March 1st, 2017

48

Asia Argento

Italian actress

*September 20th, 1975, Rome

46

Namie Amuro

Japanese singer and actress

*September 20th, 1977, Naha

20

Ananda Mahidol

Eighth monarch of Siam from the Chakri dynasty as Rama VIII

*September 20th, 1925, Heidelberg †June 9th, 1946, Boromphiman Residential Hall

87

Diter von Wettstein

German-born Danish plant biologist (1929-2017)

*September 20th, 1929, Göttingen †April 13th, 2017

72

A. A. Attanasio

American writer

*September 20th, 1951, Newark

80

James Dewar

Scottish chemist and physicist (1842–1923)

*September 20th, 1842, Kincardine †March 27th, 1923, London

53

Rachel Roberts

British actress (1927-1980)

*September 20th, 1927, Llanelli †November 26th, 1980, Hollywood

47

Mia Martini

Italian singer (1947–1995)

*September 20th, 1947, Bagnara Calabra †May 11th, 1995, Cardano al Campo

57

Lee Paul

British writer

*September 20th, 1966, Newcastle upon Tyne

47

Jon Bernthal

American actor

*September 20th, 1976, Washington, D.C.

33

Jonas Nay

German actor

*September 20th, 1990, Lübeck

Birthdays of famous people

Public holidays on September 20th

Fixed holidays (Christian feast day) which are celebrated on September 20th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1431 is a normal year and no leap year.

Calendar
September 1431