Comment Date Format
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To change the date format output on single blog post comments, you can use the ocean_comment_date_format filter hook.
add_filter( 'ocean_comment_date_format', 'my_comment_date_format' );
function my_comment_date_format() {
$output = 'Y/m/d';
return $output;
}
Adjust the $output value accordingly.
Follow this article to learn how to use this and other hooks, though the filter has already been added to this code example.
Useful Link: WordPress Date Format Strings