There are total 15 hours or 900 minutes from 6pm to 9am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 3AM to 6PM | 8AM to 11PM | 1PM to 4PM |
| 1AM to 6PM | 5PM to 7AM | 12AM to 5PM |
| 12PM to 7PM | 3AM to 12PM | 11AM to 6AM |
| 6PM to 10AM | 9PM to 11AM | 8AM to 7AM |
| 4PM to 9PM | 1AM to 8PM | 1AM to 10AM |
| 5AM to 10AM | 2PM to 11PM | 11AM to 9AM |
