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