There are total 1 hours or 60 minutes from 8am to 9am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 7AM to 12PM | 7PM to 11PM | 3PM to 10PM |
| 10AM to 5PM | 12AM to 1AM | 2AM to 9PM |
| 8AM to 5PM | 11PM to 3AM | 4AM to 12PM |
| 6PM to 4PM | 6AM to 7PM | 7AM to 11AM |
| 8AM to 12PM | 5AM to 1PM | 7AM to 12AM |
| 6AM to 7AM | 7PM to 6AM | 1PM to 7PM |
