It depends on when you start measuring.
If it's 12:00, there are 135 minutes until 2:15 (two hours = 120 minutes, plus 15 more)
If it's 2:14, there's only one minute remaining.
And so on ...
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.
45
25 minutes 10 minutes get to 10, and then another 15 minutes gets to quarter past making 10 + 15 = 25 minutes in total.
15.
30 minutes
15
45 minutes
Quarter past is an expression 15 minutes past the current hour. Each quarter of an hour is 15 minutes. So quarter past 10 is equal to 10:15.
From right now, 8 hours 34 minutes = 514 minutes. Note: This answer will be wrong, and will self-destruct, in one minute. However, it will be correct again in 12 hours.
Quarter to means 15 minutes before the hour; e.g. 5:45 Quarter past means 15 minutes after the hour; e.g. 16:15
6:05 to 6:45 40 minutes