Yes, day traders can easily use the concept of supply and demand trading. However, to do so, the uptrend and downtrend should have a sideways movement, at least for a certain time limit. It means that there should be two or more peaks in the uptrend graph at the same or equivalent level to form the supply zone. Similarly, there must be two or more troughs in the downtrend graph at the same level to indicate an accumulation or demand zone.