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