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