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