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