9:00 it's nine o'clock
9:05 it's five past nine
9:10 it's ten past nine
9:15 it's a quarter past nine
9:20 it's twenty past nine
9:25 it's twenty-five past nine
9:30 it's half past nine
9:35 it's twenty-five to ten
9:40 it's twenty to ten
9:45 it's a quarter to ten
9:50 it's ten to ten
9:55 it's five to ten
10:00 it's ten o'clock
