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