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