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