This 90 year Cycle has an average of 17 years and 7 months overlap with another 90 year cycle originating from 1932. The 1932 cycle has since subdivided into perfect spiral sections of 55 - 34 fib ratios with 21 years being the next axis projecting into 2041, 1987 crash was exactly 55 years from 1932 and the March 2020/ October 30th 2020 double lows make it approx. 34 years. The 2 lows were made in 2020 because the mid sections of the subdivisions always have approx. 336/372 days contractions.
90 years from 1932 projects to 2022 but the approx. 1 year contraction makes it shortened to 2021. Therefore the cycle positions in March 2021 and October 2021 are very important to watch, In my opinion I strongly see October 2021 creating a low and being the Origin of a 17-month bull cycle with it terminus in March 2023. Between March 2023 and April 2026 we will have another 3 years ending cycle which will commence the greatest bull market for 7 years into 2033
The 1966 cycle you indicated, that was 34 years from 1932, the 67-year Gann cycle from 1966 also ends in 2033.
2033 plus the 1 year contraction between 2021/2022 makes it exactly 34 years from the Dotcom bubble in 2000... so 2022 is actually not the next nodal axis, we have a double point axis in 2033 and 2041/2042.
2042 is exactly 145 years from the opening of the NYSE in 1897, with extra 1 year off 144-year Gann cycle, that is where the 1 year contraction comes from.