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