There are total 5 hours or 300 minutes from 8am to 1pm. In words, this duration is equal to five hours or three hundred minutes.
How many hours from
| 8PM to 9AM | 7AM to 10AM | 6AM to 12PM |
| 10AM to 7PM | 5AM to 1AM | 2AM to 9AM |
| 8PM to 3AM | 4PM to 10PM | 12PM to 11AM |
| 10PM to 2AM | 11AM to 10AM | 2AM to 1PM |
| 10PM to 5AM | 10AM to 12PM | 9PM to 12PM |
| 5PM to 10AM | 4AM to 12PM | 9AM to 6AM |
