As the the posix spec for strftime:

%c   The preferred date and time representation for the current locale.
%x   The preferred date representation for the current locale without the time.

However, python doesn't seem to respect this:

$ python3.5 -c "from datetime import datetime; print(datetime.now().strftime('%x'))"
02/06/17

$ date +%x  # This one is right:
2017-02-06

$ echo $LC_TIME
en_DK.UTF-8

* The same applies for '%c'.
* The same applies for other python versions.
* The same applies regardless of LC_TIME and LANG.
* The same applies to time.strftime()
* I tried a few different LC_TIME values, with the same result every time.