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