There are total 18 hours or 1080 minutes from 6am to 12am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 12AM to 9AM | 1PM to 8AM | 5AM to 11PM |
| 8AM to 11PM | 10PM to 5PM | 7AM to 5PM |
| 4AM to 6AM | 10PM to 9AM | 8AM to 6PM |
| 10AM to 4AM | 7PM to 8PM | 10AM to 11PM |
| 1AM to 11PM | 8PM to 9PM | 4AM to 4PM |
| 7PM to 9PM | 1PM to 10AM | 10PM to 9PM |
