1. zero hour - Noun
2. zero hour - Phrase
the time set for the start of an action or operation
Source: WordNetI think we grew up thinking that the funniest things on TV were the old, serious movies. I always liked the Marx Brothers, but the thing that always made us laugh were movies like Zero Hour. That's what inspired us. David Zucker
This is zero hour and there's no way back Can you feel that power in its arms you're wrapped All through the night-time Till the sun comes in? Now Heaven's Open Fly right in! Mike Oldfield
The secure e-Notices application can be used to submit online notices for raising issues under rules for Question Hour, Zero Hour, Special Mention, Calling Attention and Short Duration Discussion, he said when the House met for the day. Source: Internet
The stories adapted for this production were "Marionettes, Inc.", "Zero Hour" and "Kaleidoscope". Source: Internet
ZAZ's script borrowed so much from Zero Hour! that they believed they needed to negotiate the rights to create the remake of the film and ensure they remain within the allowance for parody within copyright law. Source: Internet
; "Zero Hour": Children across the country are deeply involved in an exciting game they call "Invasion". Source: Internet