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