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