For the most part it's not necessary to worry about calling the Dispose() method on ChameleonDateTime objects. Generally the instances of these objects are owned by the Table objects that you are manipulating. In the case of the static class method, Now() refers to a singleton object, so there are no problems with it. The only time you would have to worry about calling Dispose() on this object is if you created a stand-a-lone instance of the class.