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