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