<p>I was wondering if anyone could point to an Open Source date utility class that is fairly robust. I find myself rolling my own when I want to do a lot of things I take for granted in C# and Java. For instance I did find a decent example of a DateDiff() function that I tore apart and another DatePart() function. Another examples would be parsing different date/time formats. I'm trying to avoid reinventing something if it's already built.</p>

<p>Another possibility may be a nice set of Javascript files that I can convert to ActionScript 3. So far I've found <a href="http://www.datejs.com" rel="nofollow noreferrer">DateJS</a> but I want to get a good idea of what is out there. </p>

as3corelib
has the
DateUtil
class and it should be pretty reliable since it's written by some Adobe employees. I haven't encountered any problems with it.