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