There are total 11 hours or 660 minutes from 9am to 8pm. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 10PM to 2PM | 11AM to 2AM | 2PM to 6AM |
| 11PM to 2AM | 6PM to 5AM | 8AM to 10PM |
| 8PM to 10PM | 5AM to 11AM | 5AM to 4AM |
| 2PM to 10AM | 7AM to 10AM | 7AM to 11AM |
| 7PM to 2PM | 4PM to 5PM | 8PM to 7AM |
| 9AM to 4AM | 3AM to 5PM | 7PM to 4AM |
