There are total 7 hours or 420 minutes from 1am to 8am. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 9AM to 3AM | 7AM to 11AM | 6AM to 8AM |
| 1PM to 6PM | 8PM to 6AM | 11AM to 5PM |
| 4AM to 11PM | 10AM to 6AM | 6PM to 4PM |
| 5PM to 3AM | 3AM to 7AM | 3PM to 10AM |
| 8AM to 11AM | 7PM to 4PM | 1PM to 8PM |
| 1AM to 5PM | 9PM to 12AM | 7PM to 8PM |
