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