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