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
| 3PM to 1AM | 1AM to 10AM | 7PM to 11PM |
| 7PM to 9AM | 9PM to 1PM | 1PM to 12PM |
| 1AM to 2AM | 10PM to 11PM | 11AM to 8PM |
| 3PM to 11AM | 4PM to 4AM | 11PM to 2PM |
| 5AM to 9AM | 11AM to 2PM | 4AM to 11AM |
| 5AM to 4AM | 3PM to 11PM | 9PM to 12AM |
