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