In Terminator: The Sarah Connor Chronicles television series "Judgment Day" is predicted to take place on April 21.

Terminator: The Sarah Connor Chronicles (sometimes abbreviated as Terminator: TSCC) is an American science fiction television series that aired on Fox. The show was produced by Warner Bros. Television and C2 Pictures. It is a spin-off from the Terminator series of films. It revolves around the lives of the fictional characters Sarah and John Connor, following the events of Terminator 2: Judgment Day. The series premiered on Sunday, January 13, 2008, on the U.S. television network Fox. Production for the series was provided by Terminator 2 and Terminator 3 producers and C2 Pictures co-presidents, Mario Kassar and Andrew G. Vajna, C2 Senior Vice President James Middleton, David Nutter, and Josh Friedman, who not only served as Executive Producer but also wrote the script.
http://en.wikipedia.org/wiki/Terminator:_The_Sarah_Connor_Chronicles