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