Alternative Bradley Siderograph Turn Dates
In his book "Stock Market Prediction," Donald Bradley provided a formula for calculating the Bradley Siderograph.
However, rather than focusing on one very specific formula, Donald Bradley emphasized that the specific factors to be incorporated should be decided "depending upon choice after experimentation."
For example, his formula includes an "adopted multiplier" that multiplies the Long Terms and Declinations by "3, 4, or 5 times."
This pages linked to below contain an analysis of which set of weights appears to work the best for the S&P 500, Gold and WTI Crude Oil based on actual historical correlations over six separate time periods.