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