[Resolved] Date in Google SERPs not updating

Thanks, Tom!

It seems to be working. At least the old date is taken out from the SERPs.

How do I add the text: “Update” before the date though?

Current CSS I’m using:

.entry-header, .entry-meta {
    text-align: center;
}

.byline img {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    position: relative;
    vertical-align: middle;
    margin: 0 10px 0 0;
}

.comments-link,
.posted-on {
	border-left: 1px solid #ddd;
	padding-left: 10px;
	margin-left: 10px;
}

Current Function:

add_filter( 'generate_post_author_output', function() {
    return sprintf( ' <span class="byline">%1$s</span>',
        sprintf( '<span class="author vcard" itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author">%2$s<span class="author-name" itemprop="name">%1$s</span></span>',
            esc_html( get_the_author() ),
            get_avatar( get_the_author_meta( 'ID' ) )
        )
    );
} );

add_filter( 'generate_header_entry_meta_items', function() {
    return array(
        'author',
        'comments-link',
        'date',
    );
} );

add_filter( 'generate_footer_entry_meta_items', function( $items ) {
    return array(
        'categories',
    );
} );

//   remove publisheddate

add_filter( 'generate_post_date_output', function( $output, $time_string ) {
    $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time>';

    $updated_time = get_the_modified_time( 'U' );
    $published_time = get_the_time( 'U' ) + 86400;

    if ( $updated_time > $published_time ) {
        $time_string = '<time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified">%4$s</time>';
    }

    $time_string = sprintf( $time_string,
        esc_attr( get_the_date( 'c' ) ),
        esc_html( get_the_date() ),
        esc_attr( get_the_modified_date( 'c' ) ),
        esc_html( get_the_modified_date() )
    );

    return sprintf( '<span class="posted-on">%s</span> ',
        $time_string
    );
}, 10, 2 );

Thanks Tom!