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