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