There are total 21 hours or 1260 minutes from 7am to 4am. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 11AM to 7PM | 11AM to 6AM | 5AM to 1AM |
| 9PM to 1AM | 5AM to 4PM | 12AM to 5PM |
| 8AM to 4PM | 5PM to 1PM | 5AM to 6PM |
| 8PM to 4PM | 1PM to 2PM | 10PM to 7AM |
| 11PM to 12AM | 11PM to 7PM | 6AM to 10AM |
| 12PM to 10AM | 11AM to 2PM | 6AM to 10PM |
