I, too, would recommend creating the command from scratch.
There are, however, some examples/tutorials on the forum. Search for "what time is it" in quotes.
e.g., Kalle's post:
http://voxcommando.com/forum/index.php?topic=72.msg6990#msg6990In this case it's not an issue, but in general I would caution new users to be careful when borrowing xml from older threads. VC is in constant development and sometimes older posts don't capture the most efficient solution now available (or you'll run into problems by, for example, trying to use command xml meant for XBMC Eden when you have XBMC Frodo).
It's often better to first explore the preset commands in your own command tree to find related examples, and use those as a launching point for building new commands along with the documentation provided. If that fails, then turn to the forum. JMHO.