It doesn't say that DateTime is not CLS compliant, what it is saying is that
the compiler has aliases that correspond to the CLS type.  For example, in
C# you say "int" not "System.Int32", or "bool" and not "System.Boolean", and
so on.  There is not C# keyword for System.DateTime so you just simply use
DateTime.

In VB, its similar, you say "Integer" instead of "System.Int32" and "Short"
instead of "System.Int16", except in this case, you can say "Date" instead
of "System.DateTime" because there is a keyword but C# has no keyword or
"alias".

The fact that it isn't listed doesn't mean that it is not CLS compliant,
simply just means there isn't a corresponding primitive data type that maps
to a type in the Framework somewhere.

Thanks,
Shawn

This list is about PRIMITIVE data types. The fact that DateTime is not
listed does not mean anything because DateTime is not a primitive type.