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