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