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