There are total 8 hours or 480 minutes from 1am to 9am. In words, this duration is equal to eight hours or four hundred eighty minutes.
How many hours from
| 3AM to 8AM | 1AM to 8AM | 3PM to 8AM |
| 5AM to 3AM | 11PM to 8AM | 6AM to 1AM |
| 10PM to 4AM | 10AM to 10PM | 7PM to 3PM |
| 11PM to 1AM | 2AM to 7PM | 2AM to 1AM |
| 12PM to 7AM | 12PM to 8PM | 3AM to 5AM |
| 12AM to 10AM | 10AM to 8AM | 9AM to 6AM |
