There are total 18 hours or 1080 minutes from 1pm to 7am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 4AM to 12PM | 11AM to 4AM | 10AM to 11PM |
| 4AM to 5PM | 8AM to 2AM | 10AM to 11PM |
| 3PM to 7PM | 1PM to 6AM | 2AM to 9AM |
| 5AM to 4AM | 9PM to 7PM | 12PM to 2PM |
| 11PM to 1PM | 8AM to 5AM | 2AM to 11PM |
| 10PM to 12AM | 5PM to 8AM | 4AM to 12AM |
