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