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