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