There are total 15 hours or 900 minutes from 6am to 9pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 9AM to 6AM | 10PM to 6AM | 11AM to 11PM |
| 11AM to 9PM | 8PM to 2PM | 5PM to 12PM |
| 6PM to 6AM | 7PM to 1AM | 3PM to 4AM |
| 11AM to 7PM | 3PM to 10AM | 12AM to 8AM |
| 4PM to 10AM | 2AM to 7PM | 3AM to 1PM |
| 12PM to 5PM | 11AM to 9PM | 9PM to 10AM |
