 modification des parametres de base du site goal configure the basic settings of your site including the site name slogan main email address default time zone default country and the date formats to use steps in the manage administrative menu navigate to configuration   system   basic site settings  enter the site name slogan and main email address for your site click save configuration  you should see a message indicating that the settings were saved in the manage administrative menu navigate to configuration   region and language   regional settings  select the default country and default time zone for your site click save configuration  you should see a message indicating that the settings were saved in the manage administrative menu navigate to configuration   region and language   date and time formats  look at the patterns for the default long medium and short date formats if any of them does not match the date format you want to use on your site click edit in that row to edit the format adjust the format string until the displayed format matches what you want date format strings are composed of php date format codes click save format  you should see a message indicating that the format was saved repeat the previous three steps for any other date formats that need to be changed additional resources php date format codes reference 