Which of the following represents military time for 1:20 regular time?

Military time, also known as the 24-hour clock, is a way of measuring time that avoids ambiguity between AM and PM. In military time, hours are represented from 00 to 23, where 00:00 represents midnight and 12:00 represents noon.

To convert 1:20 PM from regular time to military time, you start with the hour. Since 1:20 PM is in the afternoon, you add 12 to the hour. Therefore, 1:00 PM becomes 13:00 in military time. Then you add the minutes, making it 13:20.

However, since the question specifically asks for 1:20 regular time in the AM, it remains unchanged in military format. In military time, 1:20 AM is represented as 01:20. This is why the correct answer is represented as 0120, which clearly indicates 1:20 AM without confusion with the evening hours.