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