Bitcoin seasonality on midnight, Saturdays

I studied the historical returns of BTC from 2017 to today's price (importing data from Binance's API) and what i found using a pivot chart is that the highest hourly returns BTC has happens at midnight on most Saturdays. I don't exactly know why, could be for the start of the weekend or something, but the equity linearity of a strategy that buys at midnight UTC and sells at 1 AM UTC is something exceptional: R squared is around 90%.

Why is BTC frequently going consistently up every Saturday at midnight?

does anybody have a clue?

BTC average hourly returns per weekday

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equity with 3x leverage INCLUDING binance futures fees for each trade (0.06%, which is the double, since you pay at entry and exit, of 0.03% for BTCBUSD futures)

statistics. Open position dd% refers to the max drawdown a position has had from open-to-low