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