There are total 1 hours or 60 minutes from 4am to 5am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 2PM to 9PM | 5PM to 12PM | 6AM to 11AM |
| 1AM to 6AM | 10AM to 1AM | 8AM to 6PM |
| 12AM to 9AM | 11PM to 2PM | 5AM to 11AM |
| 11AM to 9PM | 10AM to 1PM | 6AM to 1PM |
| 5AM to 11AM | 11PM to 9AM | 1AM to 2PM |
| 10PM to 12AM | 1PM to 6AM | 11AM to 8AM |
