Bitcoin last tested its Bull Market Support Band (20W SMA, 21W EMA) in late September, bouncing sharply to new ATHs the 2nd time it dipped there in a week. Right now, this support band is sitting between 50-52k. The reason price tends to bounce off here (if we are bullish) is because people have buy orders setup at these levels (especially the whales). I don't think this dip will even touch the support band, but it's interesting to note and provides you with an idea of where it will likely bottom if it happened to dip further.