Change custom post status to draft before today

Do the other post have to be set to draft? Or would just showing today’s post work? If just showing today’s post works you could do something like the following

$today = getdate();
$args = array(
    'category_name' => 'event',
    'posts_per_page' => 5,
    'year' => $today["year"],
    'monthnum' => $today["mon"],
    'day' => $today["mday"]
);
query_posts( $args );