I'm using Moodle in Japanese on Windows IIS .
I set the locale japanese_Japan.20932 in admin page. This character code is same as EUC for Linux.
But with this locale setting, time and date strings are not displayed in correctly.
I investigated this problem. Then I could fix this.
In lib/setup.php, there is not this line:
setlocale (LC_ALL, $CFG->locale); // line 235
I can't understand why LC_ALL setting is need although there is LC_TIME setting . But time and date are displayd in correctly if there is this line. So please modify this in CVS repository.