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