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