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