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