Major bitcoin price movements every 6 months coincidence or not?

This is not serious trading advice but rather an observation. As you can see after bitcoin hit $20,000 we have been having major price movements every 6 months exactly which is very spooky. i will continue to keep an eye on this but historically the month of December has been either the top or bottom! do with this fun fact what you will. thanks for reading!

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Will be interesting to see if June (2020) was the top of this local high. seems like it o_o