I don't know when. Actually, I don't focus on that.
I usually focus on main support and resistance areas. But as far as we see a rebound of the last price target I mentioned above, I consider it the start of a market correction (not bear market).
Also, don't forget the "January effect". USUALLY, this happens most likely due to the fact that managers (from hedge funds and investment funds) inevest those fat bonus received by the end of the year in the stocks.

Don't forget to resteem: it helps a lot and it's free XD