O Dia Que Durou 21 Anos
- Joer: 2012
- Land: Brazil
- Genre: Documentary
- Studio: Pequi Filmes
- Schlësselwuert: military dictatorship
- Direkter: Camilo Tavares
- Besetzung: João Goulart, Leonel Brizola, Lincoln Gordon, John F. Kennedy, Carlos Fico, Robert Bentley