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