There are total 9 hours or 540 minutes from 1pm to 10pm. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 8PM to 9AM | 6PM to 9AM | 11PM to 5AM |
| 10PM to 10AM | 1PM to 6PM | 1PM to 12AM |
| 4PM to 8PM | 11PM to 7AM | 6PM to 11AM |
| 10AM to 2PM | 4AM to 8PM | 3AM to 8PM |
| 11AM to 8AM | 4AM to 11AM | 5PM to 10AM |
| 12AM to 11PM | 10PM to 8AM | 2AM to 7PM |
