What is the designation for the first day of unauthorized absence if the member's leave expires at 2400 hours?

The correct designation for the first day of unauthorized absence occurs the day after the member's leave expires at 2400 hours. When a service member's leave ends at 2400 hours (midnight), they are expected to report back to duty at that time. If they do not return by that designated time, their absence becomes unauthorized starting from the very next day.

This timeline is crucial as it delineates the transition from authorized leave to unauthorized absence. Understanding this is important for correctly reporting and managing personnel status within military regulations. Members must be aware that timely reporting is enforced rigorously, and failing to do so results in being marked as absent without leave (AWOL) the next day.