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
| 1AM to 8AM | 6PM to 7AM | 3AM to 6AM |
| 2PM to 5PM | 6AM to 3AM | 10AM to 9AM |
| 3AM to 11AM | 4AM to 1AM | 10PM to 8PM |
| 8PM to 10AM | 4PM to 5PM | 4AM to 6PM |
| 4PM to 10PM | 11PM to 1PM | 8AM to 1PM |
| 6AM to 12PM | 4PM to 2AM | 9AM to 8AM |
