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