There are total 16 hours or 960 minutes from 9pm to 1pm. In words, this duration is equal to sixteen hours or nine hundred sixty minutes.
How many hours from
| 1AM to 4PM | 4AM to 5AM | 7AM to 2PM |
| 4AM to 5AM | 12PM to 3PM | 10AM to 2AM |
| 12AM to 9AM | 3AM to 1AM | 3PM to 5AM |
| 4PM to 8AM | 10AM to 11AM | 8PM to 7PM |
| 8PM to 10PM | 4AM to 9PM | 5PM to 6AM |
| 12AM to 8AM | 6AM to 12PM | 1AM to 12AM |
