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