There are total 8 hours or 480 minutes from 1pm to 9pm. In words, this duration is equal to eight hours or four hundred eighty minutes.
How many hours from
| 3PM to 11AM | 2AM to 9PM | 10AM to 1AM |
| 2PM to 8AM | 6AM to 7PM | 6PM to 9AM |
| 6AM to 5PM | 6AM to 6PM | 9AM to 8PM |
| 1PM to 3PM | 2PM to 12AM | 11AM to 9PM |
| 10AM to 11AM | 11AM to 9AM | 5AM to 5PM |
| 1AM to 2PM | 11PM to 6AM | 5AM to 2PM |
