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