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