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