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