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