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