There are total 3 hours or 180 minutes from 9pm to 12am. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 11PM to 6PM | 9PM to 11AM | 2AM to 1AM |
| 4AM to 11AM | 8PM to 1AM | 4AM to 11PM |
| 8PM to 3PM | 8PM to 3AM | 3AM to 6AM |
| 3AM to 9PM | 10PM to 5PM | 3PM to 1AM |
| 11AM to 2AM | 8AM to 9PM | 11PM to 10PM |
| 6AM to 1AM | 10AM to 1PM | 1AM to 2AM |
