There are total 4 hours or 240 minutes from 9pm to 1am. In words, this duration is equal to four hours or two hundred forty minutes.
How many hours from
| 8PM to 3PM | 6PM to 10AM | 8PM to 4AM |
| 1AM to 1PM | 2AM to 4AM | 3PM to 3AM |
| 6AM to 3AM | 8AM to 4PM | 11PM to 7AM |
| 12PM to 10AM | 5PM to 3AM | 12PM to 4PM |
| 12PM to 5PM | 3AM to 11PM | 6AM to 10AM |
| 4AM to 10PM | 11PM to 8AM | 9AM to 1PM |
