chamilo-lms/plugin/date/index.act.php

<?php
$convert_lang_to_code = array(
  "english" => "en_US",
  "french"  => "fr_BE",
  "dutch" => "nl_NL",
  "german" => "de_DE",
  "japanese" => "ja_JP",
  "danish" => "da_DK",
);
if(!empty($_SESSION['user_language_choice']) && !empty($convert_lang_to_code[$_SESSION['user_language_choice']])){
  $code = $convert_lang_to_code[$_SESSION['user_language_choice']];
  $locale = setlocale(LC_TIME,$code);
}
$date = strftime('%c');
?>