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