To convert any hour to military time:
Check if the hour, AM or PM.
If the hour is AM (before 12:00) and is composed of a single digit, then simply get rid of "AM" and add a "0".
If the hour is PM, add 12 to the number of hours: 3 PM becomes 3 + 12 = 15.
You can also convert only the minutes to military time. In this case, use the following comparison of ratios: minutes : military minutes = 60 : 1. Military minutes are expressed as a fraction of the unit.
Read more