How to filter posts by specific date and its tag

Ashur

Please try following code with date_query. this is working fine at my end.
Let me know if you want any additional detail.

<?php
$postdate = get_the_date('Y-m-d');
$args = array(
    'posts_per_page' => -1,
    'post_type' => 'post',
    'date_query' => array(
        'after' => $postdate,
    )
);
$update = new WP_Query($args);

while ($update->have_posts()) {
    $update->the_post();
    $post_id = get_the_ID();
    $post_title = get_the_title();
    $post_date = get_the_date();
    $post_link = get_the_permalink();
    ?>
    <p class="center">
        <span><a href="https://wordpress.stackexchange.com/questions/355705/<?php echo $post_link; ?>"><?php echo $post_title; ?></a></span><br>
        <span class="small"><i><?php echo $post_date; ?></i></span>
    </p>
<?php } ?>