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