There are total 15 hours or 900 minutes from 9am to 12am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 3AM to 10PM | 2PM to 3PM | 5PM to 4PM |
| 10PM to 10AM | 6AM to 7PM | 5AM to 3AM |
| 10PM to 2AM | 9PM to 3PM | 9AM to 12AM |
| 1AM to 2AM | 1AM to 9PM | 2PM to 12PM |
| 10AM to 8PM | 12AM to 5PM | 10AM to 4AM |
| 2AM to 5PM | 3AM to 6AM | 6AM to 6PM |
