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
| 10AM to 7PM | 11AM to 10AM | 5AM to 9AM |
| 5PM to 10AM | 4AM to 4PM | 6PM to 5PM |
| 3AM to 10PM | 4PM to 10AM | 3AM to 7AM |
| 11PM to 1PM | 11PM to 7PM | 12AM to 7AM |
| 5PM to 7PM | 8PM to 2PM | 3AM to 7AM |
| 5PM to 9PM | 6PM to 10AM | 9PM to 2AM |
