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