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