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