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