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Good thing there are certain clues;
the trend = your friend.
As far as Momo goes ok, but its measured by time,,
3;00 CST ,SPY,S&P 500 NQ, DOW,DIA slows down, same way with a a school zone slow$ traffic @ 3;00.
But really that's more time + volume based than Momo.
I NEVER worry much about...