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