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