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