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