Militime

Military time.

A general slang representation for the 24-hour time measurement system based upon using the full 24 hours in a day to represent the current time rather than using two groups of twelve hours, signified by their respectable p.m. or a.m.

P1: "What time is it?"
P2: "18:25 Militime"
P1: "What's that in regular?"
P2: "6:25 PM"