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 10AM | 9AM to 1PM | 7PM to 1PM |
| 10PM to 5PM | 6PM to 3PM | 1PM to 5AM |
| 11AM to 10AM | 8AM to 9PM | 11PM to 1PM |
| 6AM to 11PM | 4AM to 11AM | 3PM to 11PM |
| 2AM to 3PM | 3AM to 5AM | 1AM to 2AM |
| 10AM to 11AM | 1AM to 11PM | 4PM to 1AM |
