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