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