There are total 7 hours or 420 minutes from 1pm to 8pm. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 9PM to 8AM | 6PM to 1PM | 12PM to 8PM |
| 6AM to 1AM | 11AM to 5PM | 6AM to 8AM |
| 6AM to 3PM | 8PM to 9AM | 7AM to 5PM |
| 11PM to 12AM | 2AM to 1AM | 10PM to 2PM |
| 6PM to 1PM | 1PM to 10AM | 9AM to 5PM |
| 11PM to 10AM | 7PM to 9AM | 1PM to 3AM |
