- HD 1080
- Runtime: 141m.
- Status: Released
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- Languages: en
- Country: Canada, United States of America
- Director: Joseph Sargent
- Stars: Brian Dennehy, David Strathairn, Michael Tucker, Hume Cronyn, Richard Dysart
- Production_studio: World International Network (WIN), Spelling Entertainment, AT&T
- Slogan: This day will go down in history as a black mark against mankind.
- The Day One is featured in the top rankings of 1989
- #78 in Top Drama Movies of 1989
Hungarian physicist Leo Szilard leaves Europe, eventually arriving in the United States. With the help of Einstein, he persuades the government to build an atomic bomb. The project is given to no-nonsense Gen. Leslie Groves who selects physicist J. Robert Oppenheimer to head the Los Alamos Laboratory in New Mexico, where the bomb is built. As World War II draws to a close, Szilard has second thoughts about atomic weapons, and policy makers debate how and when to use the bomb.