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