@jungica: nice fix, but the order is still backwards... Right now, it says "februar 13" when i need "13 februar". Any way to change the order? :) Thanks in advance.
@peregrine: first I inserted new line ($Configuration['Garden']['Locale'] = 'sk-SK';) into conf/congig.php file, it replaced english names of months to slovak names, but I have to change the order of months and days in that names - not februar 13, I need "13 februar" jungica advised to find…