Military time is a method of measuring the time based on the full 24 hours of the day rather than two groups of 12 hours indicated by AM and PM. Conversion of an AM time to military time simply involv...Military time is a method of measuring the time based on the full 24 hours of the day rather than two groups of 12 hours indicated by AM and PM. Conversion of an AM time to military time simply involves removing the colon and adding a zero to the time. Conversion of a PM time to military time involves removing the colon and adding 1200 to the time.