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