las tres y cuarto de la tarde (quarter past 3, p.m.)
las tres y quince minutos de la tarde (3.15 p.m. - not very usual)
3:30 PM or 15:30 (it depends really)
One quarter of an hour before 3:40 PM is 3:25 PM. This is because a quarter of an hour is 15 minutes, and subtracting 15 minutes from 3:40 PM gives you 3:25 PM.
If it is 3:15 it will be between midnight and noon or am. If it is 15:15 it will be between noon and midnight or pm.
1:15pm
There are 4 hours and 15 minutes, or 4.25 hours, between 3:00 pm and 7:15 pm.
3 hours and 15 min
From 2:37 am to 6:15 am is 3 hours and 38 minutes. From 2:37 am to 6:15 pm is 15 hours and 38 minutes. From 2:37 pm to 6:15 pm is 3 hours and 38 minutes. From 2:37 pm to 6:15 am is 15 hours and 38 minutes.
The duration between 3:30 pm and 9:15 pm is 5 hours and 45 minutes.
3 pm is 15 hours, so 15-3 1/2 = 11 1/2 hours or 11:30 hours
3o'clock??? 3:00 am is 0300 hours. 3:00 pm is 1500 hours.
You would basically do something like this 45:3 it would be backwards.
You write it as 3/15. However, that can be simplified to 1/5.