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