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