When moving average of 8 period crosses moving average of 20 period from below then it is right time to buy. And vice versa for sell I.e. when 8 period MA crosses from above.
But do not buy or sell just based on this wait for confirmation. For confirmation use support and resistance. If MA's signals buy and price is near support then it has got a high chance of bullish trend.
Many traders use other indicators like MACD instead of support and resistance. If MACD is made crossover above zero line then it is a bullish trend. And vice versa for bearish trend I.e. if MACD crosses below zero line then it is high possibility of bearish trend.
But do not buy or sell just based on this wait for confirmation. For confirmation use support and resistance. If MA's signals buy and price is near support then it has got a high chance of bullish trend.
Many traders use other indicators like MACD instead of support and resistance. If MACD is made crossover above zero line then it is a bullish trend. And vice versa for bearish trend I.e. if MACD crosses below zero line then it is high possibility of bearish trend.