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