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