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