Born On Your Day
John Krasinski
Gabriel Hutchinson, CC BY-SA 4.0, via Wikimedia Commons

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John Krasinski

Actor · born October 20, 1979

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About

John Burke Krasinski is an American actor and filmmaker. He is known for his role as Jim Halpert on the NBC sitcom The Office (2005–2013), where he was also a producer and occasional director.

Adapted from Wikipedia (CC BY-SA 4.0).

Milestones, by age

Dated facts from Wikidata; ages marked “about” come from year-only dates.

  1. ~39Named Time 1002018

Sources

Every fact on this page traces to one of these.

Sources (2)

Also born on October 20

John's most notable birthday twins

Herb Simon
billionaire

Herb Simon

Entrepreneur

1934 · United States

$6.5Bolder estimate, as of 2025 · Forbes

Herbert Simon is an American real estate developer. He resides in Indianapolis, Indiana. He was educated at the City College of New York and is the owner of the Indiana Pacers, Indiana Fever, and chairman emeritus of the shopping mall developer Simon Property Group.

IndyMayorsOffice, Public domain, via Wikimedia Commons

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Snoop Dogg
actor

Snoop Dogg

Actor

1971 · United States

Calvin Cordozar Broadus Jr., known professionally as Snoop Dogg, is an American rapper, singer, record producer, record executive, songwriter, and actor.

Bruce Baker from Sydney, Australia, CC BY 2.0, via Wikimedia Commons

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Viggo Mortensen
actor

Viggo Mortensen

Actor

1958 · United States

Viggo Peter Mortensen Jr. is an American actor and filmmaker. He has received various accolades including an Actor Award and a Critics' Choice Award as well as nominations for three Academy Awards, three BAFTA Awards, and four Golden Globe Awards.

Joost Pauwels, CC0, via Wikimedia Commons

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Tom Petty
musician

Tom Petty

Musician

1950–2017 · United States

Thomas Earl Petty was an American singer, songwriter, and guitarist. He was the leader and frontman of the rock bands Tom Petty and the Heartbreakers and Mudcrutch and a member of the late 1980s supergroup the Traveling Wilburys. He was also a successful solo artist.

Ирина Лепнёва, CC BY-SA 3.0, via Wikimedia Commons

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scientist

James Chadwick

Scientist

1891–1974 · United Kingdom

Sir James Chadwick was a British experimental physicist who received the Nobel Prize in Physics in 1935 for his discovery of the neutron. In 1941, he wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts.

Sources (2)