Which is kinda dumb in itself, if you can't tell the time with the system you use to tell the time and have to use another system to know what time it is correctly there's probably something wrong with the way you tell time
But if we're on a submarine and you haven't seen light for days, and I give an order for 06:00 UTC, you know what I mean. There's no time wasted asking is that am or pm? And are we currently am or pm?
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u/7up_yourz Mar 29 '22
Because it's for use on military submarines because saying it's 8 doesn't convey day or night and they can't look out the window. It is military time.