Don, I recommend that you study some of the charts at my Web site. The following ones already contain that type of information. For example they show how 7+ magnitude earthquakes compare with moon phases as well as numerous other sun and moon data such as their gravitational strengths.

http://www.freewebz.com/eq-forecasting/90-03a.html

http://www.freewebz.com/eq-forecasting/90-03d.html