Yes. We've encountered this issue earlier. I've even discussed it on stack overflow: http://stackoverflow.com/questions/32988172/java-creating-a-date-in-pst-returns-a-date-in-pdt/32988326?noredirect=1#comment53803610_32988326
Simple solution would be to run the test cases in any other time zone than PST. You can pass -Duser.timezone=GMT to maven.
