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