Know how to pronounce daytime hours. Daytime hours are simple in the 24-hour system. Hours like 0100 to 0900 are pronounced as "Zero one hundred to zero nine hundred." From 1000 to 1200, the hours are pronounced "10 hundred hours to 12 hundred hours."
Know how to convert afternoon times. After what is 1 p.m. in the 12-hour system, the first hour in the 24-hour system is known as 1300 in military time. One way to convert these is to subtract two hours from the military time and then drop the first 1. So, for 1300 hours, you get 1 p.m. in the 12-hour system.
Try this example: 1845. Subtract 2 from 18 and you have 16. Remove the 1 and you have 6:45 in the 12-hour system.