Add “Last Updated on” to posts

If you are not already using a child theme ( https://developer.www.ads-software.com/themes/advanced-topics/child-themes/ ) you should be using that. That said…..open up /template-parts/post/content.php and find

if ( is_single() ) {
				twentyseventeen_posted_on();

Then just add the following directly below it

echo "<br /> Last updated on " . the_modified_date( '', '', '', false);

So the whole block of code should end up like this

if ( 'post' === get_post_type() ) {
			echo '<div class="entry-meta">';
			if ( is_single() ) {
				twentyseventeen_posted_on();
				echo "<br /> Last updated on " . the_modified_date( '', '', '', false);
			} else {
				echo twentyseventeen_time_link();
				twentyseventeen_edit_link();
			};
			echo '</div><!-- .entry-meta -->';
		};

It worked! Thanks a lot Jarret, you’re the best! ??
Just a quick question while I still have you here, is there any way to show only one date: either the publish date or the last updated date (if the post has been updated)?

Again, thanks a lot for your time!!!

twentyseventeen_posted_on() is already adding the date/author line so that needs to be removed and then you can just do something like the following

if ( is_single() ) {
				echo "<br /> Last updated on " . the_modified_date( '', '', '', false) . " by " . get_the_author();

the_modified_date() will use either the last modified date or if not modified it’ll use the initial date the post was created on

Thank you a million times, Jarret! ??