There are total 15 hours or 900 minutes from 5am to 8pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 8PM to 9AM | 9AM to 7AM | 8AM to 1AM |
| 12AM to 3PM | 3PM to 2PM | 1AM to 11AM |
| 7AM to 2AM | 1AM to 11PM | 8PM to 3PM |
| 7PM to 10PM | 9AM to 6AM | 4AM to 11AM |
| 3AM to 6PM | 7AM to 2AM | 11AM to 12AM |
| 9PM to 7PM | 11PM to 3PM | 9AM to 10PM |
