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