wp question – I need to seize the final day’s (right this moment) posts in a class within the numbered order in acf

I need to seize the final day’s (right this moment) posts in a class within the numbered order in acf. I’m utilizing the code beneath. can type by class. however it does not simply convey up right this moment’s posts however all posts. the place am i doing unsuitable?

 <?php 
   $right this moment = date('Ymd');
           $args = array(
            'cat'  => array(4,),
            'posts_per_page' => '30',
            'date'  => 'At this time',
            'post_type' => 'publish',
            'post_status'  => 'publish',
            'orderby' => 'meta_value_num',
            'order' => 'asc',
            'meta_key' => 'acf_sira',
            'paged'             => $paged,
             'post__not_in'      => $exclude_array
          );

            $question = new WP_Query($args);

            whereas($query->have_posts()) : $query->the_post();
        ?>