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