There are total 9 hours or 540 minutes from 4pm to 1am. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 7PM to 9PM | 4AM to 2PM | 7PM to 6AM |
| 11AM to 3PM | 7AM to 8PM | 5PM to 4PM |
| 4PM to 3PM | 10AM to 2PM | 11AM to 6AM |
| 11AM to 5PM | 8AM to 10PM | 7PM to 11AM |
| 5PM to 3PM | 5AM to 7AM | 8AM to 10AM |
| 8AM to 1AM | 8PM to 6AM | 5AM to 9PM |
