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