There are total 15 hours or 900 minutes from 9pm to 12pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 12PM to 9AM | 7PM to 4PM | 10AM to 9PM |
| 4PM to 2PM | 5AM to 9AM | 11PM to 7AM |
| 5AM to 7PM | 6PM to 11PM | 9AM to 4AM |
| 8PM to 5PM | 9PM to 11AM | 4PM to 10PM |
| 6AM to 7PM | 5AM to 6AM | 7PM to 5PM |
| 1PM to 1AM | 10AM to 2AM | 10AM to 3PM |
