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