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