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