What is the term used to refer to the time chosen to begin a military operation?

The term used to refer to the time chosen to commence a military operation is known as H-Hour. This terminology is part of military operations planning and is critical for coordinating activities among various units and branches involved in a mission. H-Hour serves as a point of reference for scheduling and synchronizing operations, ensuring that all personnel are aligned on when actions will begin.

In military lingo, the "H" stands for "hour," and it is typically utilized in conjunction with D-Day, which marks the day an operation begins, while H-Hour identifies the specific time on that day when the operation starts. This systematic approach allows for clarity and reduces confusion during complex missions.