Telling the Time
If I organised a meeting with you, I’d say something like, “Let’s meet at 3pm” or “Let’s meet at 3 o’clock”. I would never say “Let’s meet at 15:00 hours”!
If I suggest we meet at noon—that means 12:00pm, at the very beginning of the afternoon. Or at midnight,—that means 12:00am, at the beginning of a new day!
We don’t use the 24-hour clock format in everyday conversation, but you’ll see it at train stations and airports—and of course, on digital clocks!