There are total 3 hours or 180 minutes from 9am to 12pm. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 7PM to 4AM | 10PM to 7AM | 12PM to 7PM |
| 12AM to 9PM | 11PM to 9AM | 10PM to 6PM |
| 7PM to 4AM | 12AM to 10AM | 1AM to 1PM |
| 2PM to 8AM | 2AM to 10PM | 1AM to 4AM |
| 8AM to 7AM | 3AM to 4AM | 7AM to 5AM |
| 4AM to 2AM | 11PM to 1AM | 3PM to 5AM |
