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