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