There are total 15 hours or 900 minutes from 7am to 10pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 2PM to 9PM | 4PM to 6AM | 4AM to 6PM |
| 5AM to 12AM | 3PM to 9PM | 2AM to 10PM |
| 8PM to 3AM | 3AM to 10AM | 12AM to 11PM |
| 2AM to 3AM | 4AM to 12PM | 10PM to 4AM |
| 4AM to 7PM | 12AM to 7PM | 12AM to 10PM |
| 3PM to 10AM | 10AM to 5PM | 10PM to 3AM |
