Which can be used to subtract a time from another time?

The time difference operator is utilized specifically for calculating the duration between two time points. When you want to find out the amount of time that elapses between one timestamp and another, this operator effectively computes that difference by subtracting the earlier time from the later one.

This operator is essential in scenarios where understanding the interval between events is crucial, such as tracking project timelines, delivery schedules, or any temporal analysis where start and end times are referenced. By using the time difference operator, you can ascertain how much time has passed or remains, which is integral for effective planning and resource management in operations.

The other options serve different purposes and do not contribute to the specific need for subtracting one time from another.