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