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