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