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