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