There are total 15 hours or 900 minutes from 10am to 1am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 1AM to 8AM | 8PM to 5AM | 11AM to 4AM |
| 4AM to 9AM | 4AM to 6PM | 8PM to 5AM |
| 7AM to 2AM | 1AM to 11PM | 7PM to 8PM |
| 6PM to 7AM | 2AM to 4AM | 8PM to 1AM |
| 5AM to 10PM | 12AM to 9PM | 2AM to 12PM |
| 2PM to 10AM | 2PM to 7PM | 10AM to 4PM |
