How Long Will It Take Before Mercury Goes Retrograde?

Dynamics is just studying a single move that you do on a set and seeing what happens when you do that move over and over and over. Given the current configuration of our solar system, how long will it take until mercury goes retrograde? How long will this be stable? Ye, that's a long term kind of dynamical question. Usually we hear about in the world of horoscopes and stuff, you know, for the astrologers, they're very interested in, where is jupiter and where is mars, and where are they in relation to each other? Is this one in that one's house? You know, all that stuff. But this is on time