Thank you for taking the time to read @theblindsquirl I know they are long posts :) Now this is actually really complex because the precessional cycle occurs over (from memory) approx 25,800 year scales (give or take a hundred years or so) but within this huge expanse of time there are cycles within cycles. Kind of like cogs within cogs in an expensive watch. So one degree of precssion is 72 hence 3 degrees would be 216 years which isn't actually that far out. Outside of this you also have lunar cycles and and really poweful lunar cycles occur every 230 years. As we all know even a standard full moon affects metabolism and even human psyche, this can actually even be observed in cycles on the stock market etc. So equally a large 230 year lunar cycle could easily have a prfound effect on society? These precessional and lunar/solar cycles mathematics were incorperated into many ancient structures indeed the Giza pyramid is a mathematical masterclass of time and precession, as were many Mayan structures. They appear to have profoundly understood the affects these cycles had upon their civilisation. I hope this very brief overview makes sense, it's a really complex subject. Thanks again my friend!