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
| 11AM to 12AM | 10AM to 8PM | 10PM to 5PM |
| 2PM to 4PM | 3PM to 8PM | 7AM to 8PM |
| 10AM to 9PM | 8AM to 6PM | 12AM to 11AM |
| 2PM to 7PM | 6PM to 4PM | 10AM to 5PM |
| 12AM to 10AM | 2AM to 1AM | 10AM to 11AM |
| 8PM to 4AM | 5PM to 6PM | 1AM to 3PM |
