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