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