function fwc7_custom_TOSEVENT_date_format(string $date){
    //$date = '20241119';
    $newDate = new DateTime($date);
    $day = $newDate->format("N");

    $jour='';
    switch ($day) {
        case 1:
             $jour= 'lundi';
            break;
        case 2:
            $jour= 'mardi';
            // ... (truncated)