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