There are total 12 hours or 720 minutes from 6am to 6pm. In words, this duration is equal to twelve hours or seven hundred twenty minutes.
How many hours from
| 8AM to 9AM | 12AM to 3PM | 1AM to 9PM |
| 2PM to 1AM | 4PM to 6AM | 4AM to 10PM |
| 2PM to 11PM | 8AM to 6AM | 6PM to 7AM |
| 3PM to 12AM | 4PM to 12PM | 2AM to 6PM |
| 8PM to 8AM | 7PM to 4PM | 10AM to 8PM |
| 5PM to 9AM | 1AM to 4AM | 6AM to 1AM |
