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