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