There are total 12 hours or 720 minutes from 1am to 1pm. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 5PM to 12PM | 10AM to 7AM | 11PM to 6PM |
| 1AM to 8PM | 5PM to 2AM | 1PM to 8AM |
| 11AM to 5AM | 4PM to 10AM | 12AM to 8PM |
| 3AM to 4AM | 5AM to 10PM | 9AM to 8AM |
| 8AM to 2AM | 2PM to 6PM | 7PM to 10PM |
| 10AM to 12AM | 8AM to 6AM | 4PM to 7PM |
