There are total 7 hours or 420 minutes from 9am to 4pm. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 10PM to 7AM | 4PM to 8AM | 9AM to 2AM |
| 2AM to 1PM | 4PM to 10AM | 5AM to 9PM |
| 10AM to 1PM | 5PM to 7PM | 2PM to 9AM |
| 9AM to 4AM | 12AM to 5PM | 5AM to 5PM |
| 4PM to 9PM | 11AM to 8PM | 5PM to 1AM |
| 8AM to 9PM | 11PM to 10PM | 10PM to 11AM |
