There are total 1 hours or 60 minutes from 9am to 10am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 10AM to 12PM | 4AM to 5AM | 7PM to 8PM |
| 7PM to 6PM | 8PM to 4AM | 12AM to 7PM |
| 6PM to 11PM | 9PM to 5AM | 6PM to 1AM |
| 7PM to 4AM | 5PM to 5AM | 1AM to 12AM |
| 8PM to 7AM | 8AM to 2AM | 3AM to 12PM |
| 9PM to 8AM | 1PM to 3AM | 2AM to 1AM |
