mediawiki - Date format Wikimedia -

i have wiki in persian. in preferences (user preferences), can change date format persian. and, can see date format follow:

this picture shows user date format correct , in persian, correct.

but when have signed out, date format of site not persian. looks this:

this picture shows default date format not persian, not case want be.

i want default date format of site in persian, too. great if 1 guide me how change default time zone , date format of wiki site.

wiki site address: wiki.aicd.ir

i have found answer follow:

add following code @ end of localsettings.php file change default date format 'persian':

$wgdefaultuseroptions['date'] = 'persian';

Shah