NASARAVI - Here is an SPX Weekly chart showing the last complete cycle Phase I & Phase II
Phase I - Is the bars that are below the upper trend line (Top Green Line). There is one red bar. That means that during this Weekly Phase I cycle it lasted one week.
Phase II - Is the bars that either hit the upper trend line or go above the upper trend line, there are 28 bars that hit or went above the upper trend line. That represented 28 weeks.
So the entire cycle Phase I & Phase II lasted 29 weeks. Like I said in my post I have not done a spreadsheet on SPX so I have no hard data to go on. I do have hard data for QID/QLD which are the stocks I trade. So my 8 to 10 week estimate is just an educated guess based upon viewing a SPX Weekly chart over a few years period of time.