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