What method of control specifies the time in minutes and seconds for rounds to impact on the target?

The method of control that specifies the time in minutes and seconds for rounds to impact on the target is known as "Time to Target." This approach provides precise timing for when artillery rounds should arrive at the designated target location, allowing for coordinated effects on the battlefield. By defining the exact time frame, commanders can synchronize artillery fire with other operations or maneuvers, enhancing the effectiveness of the fire support.

While the other options relate to various aspects of artillery fire control, "Time on Target" typically refers to the coordination of multiple rounds from different sources to arrive simultaneously rather than specifying an individual impact time. "Request Time" may involve the timing of an artillery request but does not directly determine impact timing, and "Duration" generally deals with the length of time fire support is required rather than the specific impact timing of individual rounds. "Time to Target" is specifically focused on the target impact timing, which is essential for effective fire missions.