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