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