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