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