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