There are total 21 hours or 1260 minutes from 7pm to 4pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 8PM to 10PM | 7AM to 5PM | 2AM to 11PM |
| 9PM to 2AM | 6PM to 3AM | 1PM to 9PM |
| 2AM to 11PM | 10PM to 5AM | 6PM to 7PM |
| 4AM to 5AM | 6PM to 5AM | 3PM to 5PM |
| 10PM to 6AM | 6PM to 10AM | 11AM to 11PM |
| 7PM to 7AM | 2AM to 10AM | 10AM to 3PM |
