There are total 13 hours or 780 minutes from 8pm to 9am. In words, this duration is equal to thirteen hours or seven hundred eighty minutes.
How many hours from
| 6AM to 7AM | 1AM to 5AM | 10PM to 7PM |
| 11AM to 10PM | 3PM to 6AM | 7PM to 7AM |
| 9AM to 4AM | 1AM to 10AM | 8AM to 1PM |
| 4PM to 8AM | 1PM to 8AM | 11AM to 2PM |
| 7PM to 3PM | 5PM to 2AM | 9PM to 7AM |
| 2AM to 8AM | 5AM to 7PM | 7PM to 8AM |
