Try this:

add_filter(\'manage_posts_columns\', \'posts_columns\', 5);
add_action(\'manage_posts_custom_column\', \'posts_custom_columns\', 5, 2);
function posts_columns($defaults){
    $defaults[\'your_date_col\'] = __(\'Date\');
    return $defaults;
}
function posts_custom_columns($column_name, $id){
    if($column_name === \'your_date_col\'){
        echo the_date();
    }
}