Day One (1989 film)

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Day One
Genre	Drama History
Written by	David W. Rintels (teleplay)
Directed by	Joseph Sargent
Starring	Brian Dennehy David Strathairn Michael Tucker Hume Cronyn Richard Dysart Hal Holbrook Barnard Hughes John McMartin David Ogden Stiers Anne Twomey
Music by	Mason Daring
Country of origin	United States
Original language	English
Production
Executive producers	Aaron Spelling E. Duke Vincent
Producers	Josette Perrotta David W. Rintels
Cinematography	Kees Van Oostrum
Editor	Debra Karen
Running time	145 mins.
Production companies	AT&T Spelling Television World International Network
Original release
Network	CBS
Release	March 5, 1989 (1989-03-05)
Infobox instructions (only shown in preview)

Day One is a made-for-TV docudrama film about The Manhattan Project, the research and development of the atomic bomb during World War II. It is based on the book by Peter Wyden. The film was written by David W. Rintels and directed by Joseph Sargent. It starred Brian Dennehy as General Leslie Groves, David Strathairn as Dr. J. Robert Oppenheimer and Michael Tucker as Dr. Leo Szilard. It premiered in the United States on March 5, 1989 on the CBS network. It won the 1989 Emmy award for Outstanding Drama/Comedy Special.^[1] The movie received critical acclaim for its historical accuracy despite being a drama.