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