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