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The Great Spiral of 2015 was first illustrated here, in The Spiral Calendar text in 1992. The focus of this spiral is approximately the full moon near the winter solstice, i.e this past Friday the 25th.
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This chart best illustrates the large degree lows that formed along the even numbered Spiral Calendar sequence numbers from F26 to F32. But it is the action on the small degree sequence numbers this year that caught our attention.