Ra names it only once: the Cross of Consciousness. He calls it "the era that preceded planning", says planning began around 1615, and adds that before that you had consciousness. He links that earlier era to the 64th and 63rd gates, with deep social confusion and suffering on one side and a great deal of fundamental science on the other. Treat this as uncertain. It is the only time Ra names the earlier cycle, and nothing else he said confirms it. It does fit the structure he gives everywhere else, though. Each Global Cycle runs roughly 400 years on a right angle cross, and the precession moves backward through the wheel, so the key that left in 1615 was the one just ahead of Gate 37. Ra also wavers on the start year itself: once he says 1610 and corrects himself to 1615, and elsewhere he uses 1610 loosely. Figures circulating online about older cycles thousands of years ago do not come from Ra.
This is not a fact, not medical advice and not a promise of healing. It is part of the cosmology Ra Uru Hu, who founded Human Design, left behind, and nobody knows exactly how it will unfold.
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