There are total 7 hours or 420 minutes from 1am to 8am. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 8AM to 11AM | 2PM to 12PM | 3PM to 9PM |
| 1PM to 9PM | 8AM to 7PM | 1PM to 11PM |
| 7PM to 10PM | 5AM to 11AM | 5AM to 12PM |
| 2PM to 6AM | 2PM to 11PM | 4AM to 3AM |
| 10PM to 8PM | 12PM to 12AM | 9PM to 7AM |
| 9PM to 9AM | 6PM to 7PM | 7AM to 8AM |
