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