There are total 20 hours or 1200 minutes from 4pm to 12pm. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 9AM to 5PM | 1PM to 10PM | 10AM to 12PM |
| 12AM to 9AM | 8PM to 1AM | 12PM to 2AM |
| 10PM to 4AM | 9PM to 3AM | 1PM to 2AM |
| 2AM to 2PM | 6AM to 5PM | 5PM to 6AM |
| 5AM to 10AM | 9PM to 7AM | 4PM to 12PM |
| 12PM to 1PM | 7PM to 3PM | 9PM to 2PM |
