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