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