There are total 20 hours or 1200 minutes from 1pm to 9am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 5PM to 5AM | 6AM to 7PM | 7AM to 6AM |
| 8PM to 3AM | 9PM to 8PM | 5PM to 6AM |
| 4PM to 11PM | 6PM to 11PM | 11AM to 7PM |
| 11PM to 6AM | 7AM to 8PM | 1PM to 10PM |
| 4AM to 10PM | 6AM to 5PM | 9AM to 5PM |
| 7AM to 8PM | 4PM to 11PM | 10AM to 12PM |
