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