There are total 1 hours or 60 minutes from 3am to 4am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 8PM to 6AM | 1AM to 5AM | 7PM to 11PM |
| 2PM to 11AM | 5PM to 11PM | 11AM to 3PM |
| 5PM to 5AM | 5AM to 2AM | 1AM to 8AM |
| 8AM to 3AM | 9PM to 5AM | 7AM to 1AM |
| 3PM to 10PM | 3PM to 8PM | 9PM to 12AM |
| 2PM to 11AM | 3AM to 10AM | 2PM to 8PM |
