There are total 20 hours or 1200 minutes from 1am to 9pm. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 2PM to 3PM | 11PM to 11AM | 11AM to 3PM |
| 10PM to 9PM | 7PM to 9AM | 5AM to 11PM |
| 2AM to 12PM | 8PM to 9PM | 10PM to 7PM |
| 4PM to 9PM | 5PM to 12AM | 8PM to 11PM |
| 2PM to 3PM | 6PM to 1PM | 5PM to 11AM |
| 10AM to 8PM | 5AM to 1PM | 3AM to 12PM |
