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