It is: 15 minutes past the hour
An hour is 60 minutes and if a quarter has passed after the hour then that means 15 minutes have passed past the hour.
none
15 minutes have passed.
53 minutes past the previous hour.
It is: 15 minutes past the hour
30 minutes.
An hour is 60 minutes and if a quarter has passed after the hour then that means 15 minutes have passed past the hour.
30 minutes have past if it's half past the hours. As a side effect 30 minutes is left till the hour ends if it's half past the hour.
none
30 minutes have past if it's half past the hours. As a side effect 30 minutes is left till the hour ends if it's half past the hour.
45
15 minutes have passed.
15.
Thirty !
53 minutes past the previous hour.
15