You can't predict BTC price will go down or up within a day Its price influenced by many factors
And it isn't similar with the stock market，Predict movements is pointless
I don't know if there is someone that has the powers to predict if he knows that the price is going to be up or down for this day. Nobody really knows what is going to happen with the fluctuation of bitcoins price. But we can just predict base on what is happening for the economy of bitcoin as long as we have basis and facts.