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