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