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