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