If you looking for a way to display the Last Modified Date of a page instead of or along with the Published Date then this tiny piece of snippet would register a function for that and you could easily show the last updated date on your pages.
/* Advanced Scripts Method to Add This Snippet */ /* Title: PHP Snippet to Display Last Modified Date in WordPress Type: PHP: Custom Code Location: Plugins Loaded Priority: 10 */ function syncwin_display_last_modified_date( ) { return get_the_modified_time('F j, Y'); }