- a time when a crucial decision or essential action must be taken
- the time at which a strategic military action is planned to start
- the moment when a compulsory activity, attack, operation, etc. is scheduled to begin
- the time at which a significant event is expected to take place
- a specific time when any crucial act supposed to take place
- (literally) refer to midnight, or 00:00
In the Indian Parliament – Zero Hour is the time when Members of Parliament (MPs) can raise issues of urgent public importance during this time with prior notice to the Speaker. Since it starts right at 12 noon immediately following the Question Hour, it is probably called Zero Hour.
“Zero-hours contract” is an agreement where the company does not have to offer regular work for the worker, but the worker must be on call in case they are required to work.
- Right before the dawn, the British military had been waiting for zero hour to start the operation against terrorists in Afghanistan.
- The leader made a good decision when the team was in zero hour.
- Yesterday 18:00 has marked as the zero hour of the biggest dance competition.
- B22 bombers were taking off, and zero hour would be about 9 p.m.
The Zero Hour or Stunde Null (in German) was the expression used to mark the end of the Second World War that came with German surrender on May 8, 1945.
Another theory suggests that the idiom’s origin is related to military operations for ages because most ambush military attacks were made at midnight without letting the enemy know. If you have any information or suggestions related to this idiom, then please do share below.