April 17th, 1231

Born on April 17th, 1231

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

Why not celebrate an alternative birthday? In 335 days, exactly on April 14th, 2025, people who were born on April 17th, 1231 will be 290,000 days old!

... in seconds, minutes and hours

What happened on April 17th?

April 17th, 2014

NASA announced the discovery of Kepler-186f, the first exoplanet with a radius similar to Earth's discovered in the habitable zone of another star.

April 17th, 1986

Having supposedly been at war for 335 years without a single shot having been fired and no casualties incurred, the Netherlands and the Isles of Scilly declared peace.

April 17th, 1984

Metropolitan Police officer Yvonne Fletcher was shot and killed while on duty during a protest outside the Libyan embassy in London, resulting in an 11-day police siege of the building and a breakdown of Libya–United Kingdom relations.

April 17th, 1975

The Khmer Rouge captured Phnom Penh, the capital of the Khmer Republic, ending the Cambodian Civil War and establishing the socialist state of Democratic Kampuchea.

April 17th, 1973

George Lucas began writing a 13-page film treatment that later formed the basis of Star Wars.

April 17th, 1969

Sirhan Sirhan was convicted of the assassination of United States Senator Robert F. Kennedy.

April 17th, 1951

The Peak District was designated the first national park in the United Kingdom.

April 17th, 1907

Minas Geraes (pictured), the first of three Brazilian dreadnought battleships, was laid down, sparking a vastly expensive South American naval arms race with Argentina and Chile.

April 17th, 1809

Napoleonic Wars: After a three-day chase, the French ship D'Hautpoul was captured off Puerto Rico by a British squadron under Alexander Cochrane.

April 17th, 1797

French Revolutionary Wars: British forces commanded by Lieutenant-General Ralph Abercromby invaded the Spanish colonial port of San Juan, Puerto Rico.

April 17th, 1783

The Mechanical Turk, a fraudulent chess-playing "machine" by Wolfgang von Kempelen that was secretly controlled by a hidden human, began a tour of Europe.

April 17th, 1362

Lithuanian Crusade: After a month-long siege, forces of the Teutonic Order captured and destroyed Kaunas Castle (reconstruction pictured), which was defended by troops of the Grand Duchy of Lithuania.

April 17th, 1080

Canute IV became King of Denmark upon the death of his brother Harald III.

April 17th, 2021

The funeral of Prince Philip, Duke of Edinburgh, takes place at St George's Chapel, Windsor Castle.

April 17th, 2014

NASA's Kepler space telescope confirms the discovery of the first Earth-size planet in the habitable zone of another star.

Birthdays
... of famous people, actors, celebrities and stars on April 17th

Same Day
Who's birthday is on April 17th?

63

Pete Shelley

British singer-songwriter (1955–2018)

*April 17th, 1955, Leigh †December 6th, 2018, Tallinn

57

Timothy Gibbs

American actor

*April 17th, 1967, Calabasas

73

Horst Hrubesch

German association football player and manager

*April 17th, 1951, Hamm

65

Sean Bean

English actor

*April 17th, 1959, Handsworth

67

Nick Hornby

English novelist

*April 17th, 1957, Redhill

87

Alain Poher

French politician (1909-1996)

*April 17th, 1909, Ablon-sur-Seine †December 9th, 1996, Paris

37

Medhi Benatia

Moroccan and French footballer

*April 17th, 1987, Courcouronnes

61

Roddy Piper

Canadian professional wrestler (1954-2015)

*April 17th, 1954, Saskatoon †July 31st, 2015, Hollywood

82

David Bradley

British actor

*April 17th, 1942, York

52

Jennifer Garner

American actress

*April 17th, 1972, Houston

32

Jasper Stuyven

Belgian cyclist

*April 17th, 1992, Leuven

43

Michael IX Palaiologos

Byzantine co-emperor

*April 17th, 1277, Constantinople †October 12th, 1320, Thessaloniki

50

Victoria Beckham

English businesswoman, fashion designer and singer

*April 17th, 1974, Harlow

43

Chris Thompson

British long-distance runner

*April 17th, 1981, Barrow-in-Furness

54

Pascale Arbillot

French actress

*April 17th, 1970, France

78

Thornton Wilder

American playwright and novelist (1897–1975)

*April 17th, 1897, Madison †December 7th, 1975, Hamden

84

Sirimavo Bandaranaike

Prime Minister of Ceylon (later Sri Lanka) from 1960–65, 1970–77, 1994–2000

*April 17th, 1916, Baḷangoḍa †October 10th, 2000, Colombo

63

William Holden

American actor (1918–1981)

*April 17th, 1918, O'Fallon †November 12th, 1981, Santa Monica

83

Lagle Parek

Estonian politician

*April 17th, 1941, Pärnu

59

Rebecca Luker

American actress, singer and recording artist

*April 17th, 1961, Helena †December 23rd, 2020, Manhattan

71

Lindsay Anderson

British feature-film, theatre and documentary director and film critic (1923-1994)

*April 17th, 1923, Bengaluru †August 30th, 1994, Angoulême

75

J. P. Morgan

American financier, banker, and art collector (1837–1913)

*April 17th, 1837, Hartford †March 31st, 1913, Rome

42

Josie Long

British comedian

*April 17th, 1982, Sidcup

39

Rooney Mara

American actress (born 1985)

*April 17th, 1985, Bedford

38

Romain Grosjean

French and Swiss racing driver

*April 17th, 1986, Geneva

77

Karen Blixen

Danish writer

*April 17th, 1885, Rungstedlund †September 7th, 1962, Rungstedlund

90

Gebhard Müller

German politician (1900-1990)

*April 17th, 1900, Eberhardzell †August 7th, 1990, Stuttgart

36

Veronica Ricci

American actress and pornographic performer

*April 17th, 1988, Sacramento

22

Michal Plocek

Czech rower

*April 17th, 1994, Uherské Hradiště †November 28th, 2016, Prague

74

L. Scott Caldwell

American actress

*April 17th, 1950, Chicago

48

Peter Aumer

German politician

*April 17th, 1976, Regensburg

42

Lee Joon-gi

South Korean actor and singer

*April 17th, 1982, Busan

32

Shkodran Mustafi

German association football player

*April 17th, 1992, Bad Hersfeld

22

Chloé Jacquet

French rugby union player

*April 17th, 2002, Viriat

74

Carl Friedrich Philipp von Martius

German botanist (1794-1868)

*April 17th, 1794, Erlangen †December 13th, 1868, Munich

78

Maximilian I, Elector of Bavaria

Wittelsbach ruler of Bavaria and prince-elector (Kurfürst) of the Holy Roman Empire

*April 17th, 1573, Munich †September 27th, 1651, Ingolstadt

28

Gianluca Mancini

Italian association football player

*April 17th, 1996, Pontedera

73

Olivia Hussey

British-Argentinian actress

*April 17th, 1951, Buenos Aires

62

Nancy Hogshead-Makar

American swimmer, Olympic gold medalist, lawyer, professor

*April 17th, 1962, Iowa City

27

Tilen Bartol

Slovene ski jumper

*April 17th, 1997, Municipality of Loški Potok

Birthdays of famous people

Public holidays on April 17th

Fixed holidays (Christian feast day) which are celebrated on April 17th.

Date as a Roman numeral / digit

Leap year

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

Calendar
April 1231