I recall tracking a 55 trading day cycle in the Dow years ago. In the 80's it was more like 45 to 50 "trading days". But it didn't always complete and would occasionally go a 1/2 cycle. But it drove me crazy and I threw out all my notes etc on it one day. It still exists right to this day regardless of economics or anything else going on but like all cycles doesn't work like a clock, But it does make you realize there is something far greater running markets than what it looks like. If one had a staff of researchers you'd likely find there is some common sense to it all such as money flows pouring into mutual funds or into the Bond market at set times during the month and year etc. Or government money flows in and out and related transactions around the world. Just don't have that kind of research at my finger tips. In any case I thought I'd point out your exact calculation using the Gann Wheel for Jan4th Corn low.

Whilst I'm at it I might as well post this Weekly chart of Corn with various important historic price levels as a guide. That recent low near 672 was a critical point to "test". Now the test of the present downtrendline is also critical. Clearing that could be wildly bullish. Pullbacks like this one can be very bullish Flag patterns that reverse back up again with a vengeance.