There are total 17 hours or 1020 minutes from 8am to 1am. In words, this duration is equal to seventeen hours or one thousand twenty minutes.
How many hours from
| 4AM to 10PM | 5AM to 2PM | 8AM to 6AM |
| 8AM to 12AM | 2PM to 9AM | 7AM to 10AM |
| 1AM to 6AM | 9PM to 12AM | 1AM to 2AM |
| 10PM to 9AM | 11AM to 8AM | 4PM to 1AM |
| 5AM to 2AM | 4AM to 11AM | 8PM to 3PM |
| 5PM to 4AM | 12AM to 5AM | 4PM to 12AM |
