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