As we approach Solar minimum, I thought it might be worthwhile to examine what Dr Landscheidt had to say about future of Solar Cycles and how things look for upcoming solar cycle 24.
Perhaps the best approach is to take a close look at this definitive paper:
EXTREMA IN SUNSPOT CYCLE LINKED TO SUN’S MOTION
(Received 21 May 1999; accepted 13 September 1999)
Partitions of 178.8-year intervals between instances of retrograde motion in the Sun’s oscillation about the center of mass of the solar system seem to provide synchronization points for the timing of minima and maxima in the 11 -year sunspot cycle. In the investigated period 1632-1990, the statistical significance of the relationship goes beyond the level P = 0.001. The extrapolation of the observed pattern points to sunspot maxima around 2000.6 and 2011.8. If a further connection with long-range variations in sunspot intensity proves reliable, four to five weak sunspot cycles (R < 80) are to be expected after cycle 23 with medium strength (R ~ 100).
The part I bolded is a most interesting prediction of upcoming solar activity.
As we have not yet reached solar minimum, and no high latitude cycle 24 spots have yet appeared, we may still be 12 to 18 months from minimum if recent cycles are anything to go by, and I venture a speculation that if no cycle 24 spots appear in the very near future then perhaps Dr Landscheidt should have also mentioned the other possible date of the upcoming solar max using his methods, 2013.6 (see details of his methods in the paper), which if it turns out to be true means a very long cycle which could indicate a very low sunspot max.