As we see it both the steps are done as the project approaches the closing stage. This is the final few steps that helps in assessing the result of the project which is going to end. I feel the verification must be done at the conclusion of the design. The verification is a process that helps in checking the specification and its characteristic features. The process which checks the technical needs are satisfied or not. So at the end of the technical process the verification can be done. It is the checking of design control and its stability over the time.
As in case of validation, this step predicts about the failure or success of the developed project. So this is a done at the closure of project. This is implemented as a trial before the product/project is actually applied into the field.