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