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