There are total 18 hours or 1080 minutes from 1am to 7pm. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 12PM to 1PM | 4PM to 8PM | 12AM to 3AM |
| 2PM to 10AM | 5AM to 8AM | 3AM to 9PM |
| 2AM to 6AM | 1PM to 6PM | 6AM to 4AM |
| 7AM to 11AM | 1AM to 6AM | 5PM to 2AM |
| 4AM to 5AM | 7AM to 5PM | 12PM to 10PM |
| 10AM to 2PM | 7AM to 5PM | 12AM to 8AM |
