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