Several hundred years. From eighteen seventy-five, to be specific.

[He sounds a bit apologetic about that. He knows it's a long time before pretty much everyone here.]

And, ah, I do not suppose you know what a Vee Aye is, do you? The lady Aria suggested I consult it, whatever it is, and something called a terminal....

[Yes, Shepard. You just got the most clueless individual asking for your help. That's what you get for putting yourself out there.]