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