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
| 11PM to 9AM | 1PM to 11AM | 10PM to 6PM |
| 2PM to 9PM | 3AM to 1PM | 11PM to 6PM |
| 7PM to 1AM | 10PM to 11AM | 1PM to 3PM |
| 2AM to 1PM | 4AM to 2PM | 1AM to 11AM |
| 9AM to 3PM | 10AM to 10PM | 12AM to 12PM |
| 7AM to 6AM | 4AM to 10PM | 3PM to 11AM |
