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