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