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