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