Does any body seem to notice the trend the stock markets seems to fall around 21-23 of every month and then reaches its peak around 10th-13th??

I have been noticing this trend ever since 27th September'2024 when market wasat all time high the stocks seems to touch their low around 20th or whichever is the last friday of 3rd week and then the market reverses only to drop back in 3rd week of expiry. Seems like stop loss hunting is going on?