I agree that when things are unsure just be idle and wait for the next event. Anyway, day trader doesn't care much of the timing since they trade and try to get profit on every trade.  Buy and Sell all the way lol,  like when  their buy order is filled, they will sell it at a price where they have at most 20% profit and when filled buy again. Then they rinse and repeat until they book a good profit for the day.