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