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