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