21:00
21:00:00
On a 24 hour clock, it's pm. On a twelve hour clock, it could be either.
It is normal time. Most of the world uses the 24 hour clock, rather than the 12 hour clock. As far as the 12 hour clock would go, that would be 4:30 PM. Anything you see over 13:00, just subtract 12, and you'll get the time you would on a 12 hour clock (PM).
Yes we do. We usually measure AM from midnight to 12 noon, and PM from noon to midnight. However - travel-orientated situations use the 24-hour clock to avoid confusion.
1430 military time is 2:30 pm civilian time. The time zone is often added; 1430 EST, PST, or whatever is appropriate. Note that military (and European) time is based on a 24-hr clock, as opposed to the civilian 12-hour clock.
Times denoted with pm occur between 12 noon and midnight. 5.35pm is thus 5.35 + 12 = 17.35 using the 24hr clock.
2000 hrs
2 PM on the 24 hour clock is 14:00.
16.30PM
On a 24 hour clock, it's pm. On a twelve hour clock, it could be either.
5+12 is 17:00 in 24 hour clock
16:00 is 4pm on a 24 hour clock.
2 pm
Quarter past four in the afternoon is the same as 4:15 pm.On a digital clock it could be shown as 4:15 with a pm indicator or 16:15On a 24 hour clock it would always be shown as 16:15
4 pm is 16.00
12 hour clock's have am and pm. 24 hour clock's (military time) is 00:00 through 23:59. Midnight on a 12 hour clock is 12:00am, on a 24 hour clock is 00:00. So 23:59 would be 11:59pm.
It is 17:00.
Habit, and convention. We all have to speak the same language if we're going to communicate. Personally, I prefer the 24 hour clock; so 1 PM is 13:00, and 9 PM is 21:00. Of course, I did spend 21 years in the Navy, and we used the 24-hour clock exclusively. But for talking to civilians in the US, you have to use the 12 hour clock with AM and PM.