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