There are total 23 hours or 1380 minutes from 9pm to 8pm. In words, this duration is equal to twenty-three hours or one thousand three hundred eighty minutes.
How many hours from
| 1AM to 12AM | 11PM to 6AM | 9AM to 5PM |
| 8PM to 6PM | 10AM to 3AM | 9AM to 4AM |
| 11AM to 9PM | 12PM to 4PM | 6AM to 6PM |
| 6PM to 11PM | 7PM to 6PM | 2AM to 5PM |
| 6PM to 10AM | 6PM to 10AM | 9AM to 7PM |
| 6PM to 12AM | 11PM to 10PM | 10PM to 1AM |
