There are total 13 hours or 780 minutes from 9am to 10pm. In words, this duration is equal to thirteen hours or seven hundred eighty minutes.
How many hours from
| 8AM to 4PM | 12AM to 8PM | 5AM to 4AM |
| 12AM to 8AM | 5AM to 2AM | 2AM to 8PM |
| 10AM to 8PM | 8AM to 2PM | 11PM to 1PM |
| 9AM to 11PM | 11PM to 5AM | 11AM to 10AM |
| 7AM to 3AM | 8PM to 4PM | 1AM to 11AM |
| 9AM to 8PM | 1AM to 7PM | 5AM to 9PM |
