Filter posts by date and time

add_action('pre_get_posts', 'cgy_same_day');

function cgy_same_day($query) {

    if ($query->is_home() && $query->is_main_query()) {
        $today = getdate();

        $query->set('date_query', array(
            array(
                'day' => $today['mday'],
                'month' => $today['mon'],
            ),
        ));
        $query->set('post_status' ,  array('publish','future'));

    }
    
    return;
}