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