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