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