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