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
| 7PM to 2AM | 4AM to 3PM | 10PM to 10AM |
| 2AM to 3PM | 5PM to 7AM | 1PM to 5PM |
| 7PM to 12PM | 6AM to 12PM | 9AM to 11PM |
| 5PM to 2AM | 9AM to 3AM | 10AM to 2AM |
| 7PM to 6PM | 11PM to 3PM | 9PM to 6AM |
| 2AM to 5PM | 5PM to 1PM | 11AM to 9PM |
