There are total 15 hours or 900 minutes from 10pm to 1pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 8AM to 11PM | 10AM to 10PM | 8PM to 9AM |
| 11PM to 8AM | 6PM to 7AM | 4AM to 6PM |
| 6AM to 5AM | 9PM to 5AM | 3PM to 7AM |
| 3AM to 8PM | 9PM to 6PM | 3PM to 3AM |
| 9AM to 9PM | 8AM to 9PM | 3AM to 11PM |
| 10AM to 5PM | 7PM to 5AM | 3AM to 4PM |
