Nick Momrik

Displays the date ad time the post/page was last modified.
<h3>Configuration</h3>
You can pass it a date/time format (http://us4.php.net/date) 
Example: <code>mdv_last_modified('l dS of F Y h:i:s A')</code>

Last Modified

Displays the date ad time the post/page was last modified.

linknacional

The <a href="https://www.linknacional.com/wordpress/plugins/" rel="nofollow ugc">Post Updated Date for Divi</a> is a simple plugin, that displays the date of the latest post update or modification, instead of the publication date.
Dependencies
No dependencies.
User instructions
<ol>
<li>
Search the WordPress sidebar for ‘Posts’;
</li>
<li>
In the post page, look for the date column;
</li>
<li>
The displayed date, should be the date of the last update to the post, instead publication date.
</li>
</ol>

Post Updated Date for Divi

Shows the post updated or modified date for divi blog posts. Will show only those posts are modified or updated.

Last Modified vs Post Updated Date for Divi