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