There are total 10 hours or 600 minutes from 11am to 9pm. In words, this duration is equal to ten hours or six hundred minutes.
How many hours from
| 9AM to 11AM | 1PM to 4AM | 10PM to 6PM |
| 7AM to 2AM | 1PM to 2AM | 4PM to 7AM |
| 1AM to 5AM | 11PM to 10PM | 6PM to 4AM |
| 2PM to 5PM | 10PM to 1AM | 11AM to 12AM |
| 3PM to 3AM | 10AM to 4PM | 2AM to 9PM |
| 7AM to 4PM | 3AM to 2AM | 10AM to 1AM |
