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