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
| 11AM to 2PM | 2PM to 4AM | 11PM to 6AM |
| 10PM to 5AM | 7AM to 10AM | 1AM to 5AM |
| 5PM to 1AM | 4AM to 5PM | 12PM to 1AM |
| 1AM to 10PM | 12AM to 1AM | 6AM to 5AM |
| 7PM to 10PM | 8PM to 7PM | 5PM to 8PM |
| 10AM to 8PM | 8AM to 10PM | 11PM to 12PM |
