Display the Last Updated Date on WordPress

<?php
$u_time          = get_the_time('U');
$u_modified_time = get_the_modified_time('U');

// Only display modified date if 24hrs have passed since the post was published.
if ($u_modified_time >= $u_time + 86400) {

    $updated_date = get_the_modified_time('F jS, Y');
    $updated_time = get_the_modified_time('h:i a');

    $updated = '<p class="last-updated">';

    $updated .= sprintf(
        // Translators: Placeholders get replaced with the date and time when the post was modified.
        esc_html__('Last updated on %1$s at %2$s'),
        $updated_date,
        $updated_time
    );

    $updated .= '</p>';

    echo wp_kses_post($updated);
}