I hate using military time, being around so much it sort of starts to grow on you. Here's a little help on learning military time.
If it's past noon, add 1200 to it. Example: (1:00pm) 1+1200= 1300
If you watch the show Army Wives, they're not 100% right on everything. If it's before noon, it's ZERO and then the time and not OH. Example: 8am...0800 (Zero eight hundred)