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