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