BTC weekend rally, bloody monday?

I've read a few times the idea that BTC tends to rally on the weekends. I wrote some code to check up on this and didn't find anything meaningful. In the last 360+ days we've only had 1 weekend rally followed by a substantial move.

You may consider many more instances of this pattern if in your opinion a ~-2.7% movement is significant. Even then, there doesn't seem to be a consistent pattern. So, I'm writing this off as recency bias from those that have voiced this idea.
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