2.2.2 VarDate Type
VarDate type is the set
of all references to Microsoft COM VARIANT data structures that have a VARTYPE
enumeration value of VT_DATE.
VarDate values can be created only by host objects and
host functions, or by calling the getVarDate method by using the prototype
property of the Date object: Date.prototype.getVarDate.
can be manipulated similarly to other ECMAScript data types.