There are total 3 hours or 180 minutes from 6pm to 9pm. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 7AM to 8PM | 4PM to 12AM | 11AM to 6AM |
| 9PM to 11PM | 1PM to 9PM | 8AM to 4PM |
| 1AM to 4PM | 11PM to 1PM | 7PM to 10AM |
| 9PM to 10AM | 11AM to 3AM | 7AM to 9PM |
| 10PM to 12AM | 12AM to 2AM | 5AM to 8AM |
| 11AM to 4AM | 6AM to 4AM | 2AM to 12PM |
