[nextlevelwizard]

do people actually say "fourteen oh-oh"?

I've used 24 hour clocks all my life and everyone uses 1-12 when talking. If someone is coming to see you at 14:00 they will say: "see you at two". We only use the proper format when writing.

[tluyben2]

No, in speech/direct chat you would say 2 indeed, but not when it can be confusing. When there is any doubt, even on the phone when making an appointment I always repeat the time in 24 hour format if the appointment is more than 12 hours away. Just to make sure.

[sonofgod]

I wouldn't say "fourteen oh-oh", but "fourteen hundred", and I've rarely heard just "fourteen".

Extends obviously to "fourteen thirty".

(Northern England)

[gpvos]

Interesting, I thought that -hundred or even -oh-oh was an American thing, originating in their military. (Non-native speaker from the continent.)