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