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