Date selectorstarts the week on Sunday in quizs but I need it starts on Monday because I need to fix to my regional preferences.
date selector starts on Sunday on moodle 2.5 but I need it starts on Monday
In your language (Spanish?) language folder, file langconfig.php change $string['firstdayofweek'] = '0'; to $string['firstdayofweek'] = '1';
Or go to Administración del sitio ► Idioma ► Personalización del idioma, and see screenshot: