Thanks Ray - too good to be true. You are right. In looking at all the planet alignments against earthquake lists this was the one that had the most obvious trend. I should have looked into it more closely. Given that Mars goes retrograde while opposite Sun I had assumed that the periods were the same. Ah, well. Back to square one. Strike out the Mars effect. The same problem applied to the claims about Jupiter and Saturn, but hopefully not to all the findings. I will look to see what I can salvage.