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