There are total 21 hours or 1260 minutes from 12am to 9pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 11PM to 1AM | 5AM to 7AM | 2PM to 5PM |
| 6AM to 10AM | 11AM to 6AM | 12AM to 1PM |
| 8AM to 11AM | 12AM to 10AM | 7AM to 9AM |
| 1PM to 6PM | 9PM to 12AM | 3AM to 12PM |
| 8PM to 12PM | 9AM to 2PM | 12AM to 4PM |
| 5AM to 7PM | 6AM to 9PM | 6PM to 5AM |
