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