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