Midnight, also known as 00:00 or Zero HourThe commencement of an action or operation
Literature
Zero Hour (comics), a 1994 DC Comics comic book miniseries and crossover storylineZero Hour (play), a 2006 play by Jim Brochu about the life of actor Zero Mostel"Zero Hour", a 2010 Nick Stone story by Andy McNab"Zero Hour", a story told in the Galileo Simulator at the Christa McAuliffe Space Education Center"Zero Hour", a short story by Ray Bradbury appearing in The Illustrated Man
Film and television
Zero Hour!, a 1957 film written by Arthur HaileyThe Zero Hour (1939 film), an American film directed by Sidney Salkow"Zero Hour" (Star Trek: Enterprise), a 2004 episode of Star Trek: Enterprise"Zero Hour" (Stargate SG-1), a 2004 episode of the science fiction television series Stargate SG-1Zero Hour (TV series), a 2004 documentary-style TV show retelling tragic man-made disasters"Zero Hour! The Destruction of the Hidden Leaf Village Begins!", a 2004 episode of Naruto
Music
Zero Hour (band), a progressive metal bandZero Hour (Eidolon album), 1996Zero Hour (Zero Hour album), 1999Zero Hour (Avengers album), 2003"Zero Hour", a song on Noir's 2005 soundtrack"The Zero Hour", a song on Project One's 2008 album Project One: The Album"Hora Zero", a song on Rodrigo y Gabriela's 2009 album 11:11
Video games
Command & Conquer: Generals – Zero Hour, a 2003 real-time strategy video gameDuke Nukem: Zero Hour, a 1999 third-person shooterZero Hour: America's Medic, a 2009 game designed to train and exercise first responders
Other media
The Zero Hour (World War II), a radio program broadcast by Japan in WWIIThe Zero Hour (radio series), a 1973-74 radio drama series hosted by Rod Serling