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