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