[OT] How to turn on echo or date/time UDP services on OS X?

[Dar Scott]

I'm testing some UDP sockets code in some Revolution stacks and it 
would be handy to test it with the simple Internet services echo and/or 
date-time.  I suppose I could go reinstall it on my XP, but I'm lazy 
and besides I'd like to use them when my XP is down.  I could make a 
standalone, but I want something independent of Revolution.

So...

How do I turn those on on OS X?

Dar Scott