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