There are total 4 hours or 240 minutes from 8am to 12pm. In words, this duration is equal to four hours or two hundred forty minutes.
How many hours from
| 1PM to 8AM | 8PM to 1AM | 10AM to 5PM |
| 9AM to 12PM | 10AM to 8AM | 11PM to 11AM |
| 1PM to 5AM | 11AM to 5AM | 5AM to 2AM |
| 9PM to 12PM | 9PM to 1PM | 9AM to 10AM |
| 4AM to 5AM | 8PM to 7PM | 7PM to 2PM |
| 11AM to 9PM | 5PM to 5AM | 12PM to 2AM |
