The chart above shows the 13-year and the 17-year cycles discussed in Bradley Cowan's book Pentagonal Time Cycle Theory (p. 86 HERE) . It projects a bull market high to May 2013.
The 17-Year Cycle indicates that after a
major high in 2013 there will be a bear market. The Major Low of June
1949 will compare to a Major Low around December 2016. From the low of
June 1949, stocks entered into the great post World War II bull market
that lasted for 17-Years. From that low in December 2016 a 17-Year major
bull market comparable to 1949-1966 and 1982-2000 is due.