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