There are total 11 hours or 660 minutes from 1am to 12pm. In words, this duration is equal to eleven hours or six hundred sixty minutes.
How many hours from
| 9PM to 7PM | 4PM to 9PM | 9PM to 4AM |
| 8PM to 1AM | 5PM to 5AM | 6PM to 4PM |
| 2AM to 2PM | 8PM to 9PM | 8AM to 8PM |
| 10AM to 11AM | 1PM to 2PM | 5AM to 11PM |
| 2PM to 8AM | 10AM to 9PM | 4PM to 8AM |
| 2PM to 3AM | 1PM to 2PM | 1PM to 3AM |
