There are total 9 hours or 540 minutes from 9am to 6pm. In words, this duration is equal to nine hours or five hundred forty minutes.
How many hours from
| 6PM to 9PM | 10PM to 12PM | 11AM to 6AM |
| 4PM to 6PM | 6PM to 8PM | 7AM to 6PM |
| 6AM to 4AM | 12PM to 10AM | 6PM to 4PM |
| 4AM to 10AM | 3AM to 12PM | 5AM to 10AM |
| 6AM to 5PM | 1AM to 11AM | 7AM to 6AM |
| 7AM to 11AM | 12AM to 10PM | 9PM to 11PM |
