The first date is the date the judgement was awarded. The second date is the date it was docketed at the other court.
Allow me to explain something. In Virginia, the general district court is a court that hears civil cases involving amounts in controversy up to $25k. Circuit courts, by contrast, hear cases of any amount. They also hear appeals from judgments entered by general district courts. There is no reason -- other than if an appeal was filed -- why a case from a general district court might get "docketed" in a circuit court.
Therefore, the question for you -- and it's a question you ought to be able to answer and which is important to providing you with information -- is why you had a case that resulted in a judgment in general district court but then was "docketed" in circuit court. Did you appeal the judgment? It's a very simple, yes/no question.
If you appealed the judgment, that has nothing to do with how long the judgment is enforceable, so the date of entry in general district court is the relevant date.
So...please go back to my prior response and answer the questions I asked and the the question I asked in this response. If you don't do that, then there's nothing more anyone here can do for you.