There are total 15 hours or 900 minutes from 9am to 12am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 7AM to 3AM | 4AM to 11PM | 11PM to 11AM |
| 3AM to 9AM | 5AM to 6PM | 1AM to 1PM |
| 9PM to 3PM | 2AM to 1AM | 1PM to 3AM |
| 10PM to 3PM | 8PM to 3PM | 2AM to 5PM |
| 3AM to 9AM | 9PM to 3AM | 1PM to 6AM |
| 7PM to 1PM | 4PM to 11PM | 10AM to 8PM |
