danivalentin

This was based on <a href="http://lesterchan.net/wordpress/readme/wp-relativedate.html" title="Relative Date" rel="nofollow ugc">Lester Chan’s Relative Date plugin</a>. 
It tries to simplify things a bit. This plugin can:
<ul>
<li>Replace the_date() in the post</li>
<li>Replace get_comment_date() or comment_date() in the comments</li>
</ul>
Note that if your theme is writing the date in a different form, it won’t work. You have to 
replace its function call to one of the above (in the TwentyTen theme for example, replace twentyten_posted_on() 
by the_date().
Also important to say that, comment replacement won’t work if you are using the default wp comment renderer because 
it calls get_comment_time() as well. You have to do a customized callback function to use with 
wp_list_comments( array( ‘callback’ => ‘your_customized_function_here’ ) ). (ok, maybe things were not 
simplified that much :/)
There is a options page (under settings in the Admin) where you can choose which dates you 
want to replace (posts/comments). Posts date are by default checked.
Portuguese translation included.

Simple Relative Date

A simple way to turn your post/comment date in its relative versions.

This plugin adds a function that prints a fuzzy date and time in french. For example, “22 octobre 2012 à 14:00” can get changed to “Il y a 3 heures”, or “Hier en début d’après-midi”, or “Il y a 2 mois”, etc.
It also provides hooks to automatically fuzzify comments dates and times, but it’s pretty rough at the moment.
This plugin is adapted from Splee’s <a href="https://wordpress.org/extend/plugins/splees-fuzzy-datetime/" rel="ugc">Fuzzy DateTime</a>.
<h4>Contribute</h4>
I (mll) am not really a developer. Lots of things could be improved : * make this plugin really international, with a GUI to edit what’s hard-coded at the moment * make a GUI to set the options on wich dates must be fuzzified * …
So, if you feel like contributing to the development of this plugin, please let me know!

Simple Relative Date vs Fuzzy DateTime in french