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