There are total 18 hours or 1080 minutes from 1am to 7pm. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 5AM to 10AM | 8PM to 1AM | 7PM to 2AM |
| 1AM to 8AM | 10PM to 6AM | 12AM to 3PM |
| 8AM to 1AM | 7PM to 11PM | 5AM to 11AM |
| 9AM to 5PM | 1PM to 11AM | 8AM to 12PM |
| 11PM to 2AM | 7PM to 2PM | 5PM to 7PM |
| 3PM to 9PM | 3AM to 3PM | 12PM to 3PM |
