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
| 9PM to 4AM | 2AM to 12AM | 10PM to 1PM |
| 2AM to 11PM | 8PM to 12AM | 10AM to 8PM |
| 12PM to 1AM | 10PM to 11AM | 9AM to 12AM |
| 11AM to 12AM | 8AM to 1AM | 9AM to 12PM |
| 3PM to 12PM | 5PM to 7PM | 7AM to 2PM |
| 2PM to 8PM | 11PM to 12AM | 6PM to 11AM |
