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