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 | 10PM to 5AM | 6PM to 5PM |
| 3PM to 1PM | 2AM to 9AM | 5AM to 8AM |
| 9PM to 3AM | 1PM to 4PM | 8AM to 10PM |
| 11PM to 7PM | 6AM to 8PM | 10PM to 5AM |
| 6AM to 8PM | 2AM to 9PM | 11AM to 10AM |
| 12AM to 10PM | 10AM to 4AM | 12PM to 11AM |
