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
| 12AM to 11PM | 5PM to 12PM | 7AM to 9AM |
| 12PM to 5PM | 7AM to 11PM | 7PM to 2AM |
| 1PM to 1AM | 8AM to 9AM | 12AM to 4AM |
| 10AM to 11PM | 3AM to 7AM | 9PM to 5AM |
| 9AM to 1PM | 12PM to 6AM | 5AM to 1PM |
| 10AM to 2AM | 5AM to 11AM | 1AM to 3AM |
