Does't need to be today, the key is

We want to see a strong rally to take out the previous downtrend wave structure, and that point is 6635. 

As long as we go straight and take it out without first doing a large pullback, it sets a very high probablity. It could be today, but does not need to be today.

Once we have a high probablity that correction cycle has finished, it allows us higher confidence to buy at future pullback.