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