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