I’ve recently been working with Gareth over at flexoop.com. He has been creating a more feature rich Date utility class.
As he puts it, “FlexDateUtils expands the Flex date library to be more on par with the date libraries found in many other programming languages. Most of the methods were adopted from ColdFusion as those are very full featured.”
Gareth has done a great job putting this library together.
Check out the project on RIAForge.
There are also in depth explanations on how to use the library on flexoop.com.