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