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