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