By the command
$date
the time and date of the system (according to local place) is printed. Is there a command that outputs Kde's short date format in terminal?

The date in KDE also depends on a calender:

By the command
$date
the time and date of the system (according to local place) is printed. Is there a command that outputs Kde's short date format in terminal?

The date in KDE also depends on a calender:

You can use date for that anyway:
date '+%A, %Y/%m/%d'
which will currently output
Friday, 2013/12/20
Just run date --help to find out more...
For calendar specific, or at least locale specific, specific date names, try exporting the locale - e.g. this one:
export LC_TIME=am_ET.UTF-8
and then run the command again:
ዓርብ, 2013/12/20
You can list the locales with locale -a - more on that here.
This bit is based on a lot of guessing...