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