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