diff --git a/_posts/05-03-01-Date-and-Time.md b/_posts/05-03-01-Date-and-Time.md
index 93f043a..8c826c0 100644
--- a/_posts/05-03-01-Date-and-Time.md
+++ b/_posts/05-03-01-Date-and-Time.md
@@ -60,6 +60,8 @@ foreach ($periodIterator as $date) {
 }
 {% endhighlight %}
 
+A popular PHP API extension is [Carbon](http://carbon.nesbot.com). It inherits everything in the DateTime class, so involves minimal code alterations, but extra features include Localization support, further ways to add, subtract and format a DateTime object, plus a means to test your code by simulating a date and time of your choosing.
+
 * [Read about DateTime][datetime]
 * [Read about date formatting][dateformat] (accepted date format string options)