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