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