Dave, if these Earth changes that we are observing and which are obviously intensifying now, are indeed macro cylical, then the correlation between season changes would be paramount!
Just looking at it from the prespective of the R-B Effect (the primary physical effect), it is exactly at the season changes where the Earth motion is changing most significantly, and the summer and winter transitions being the most significant!
Just draw an ellipse on a piece of paper and then move a point around that orbit and you will see exactly what I mean by that in terms of changes in direction of the motion. So, if there are other key forces at play in a macro cycle, then all of the other standard transition forces become somehow more intense!!!
I see it as some sort of allignment of forces at a galactical level!!!
eom