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