I take the hypothèse that saturday is the most stable day of the week because, no SP500, no fed announcement and no weekly closure. My Strategy is very simple: Take the friday color (Red = Short // Green = Long) Then open at the friday close price Take a small pourcentage (1 or 2 %) then close. What ever close on midnight.
Work Well on the 1h chart.
The Yellow is the saturday.
Maybe we can add the monthly close information to avoid opening trade on saturday if we are at this event.