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