Banknifty today may open at 39400 and it may fall till 39280. Here you can see a short covering towards 39580. If this level is not sustained then sharp correction towards 39073 is possible. . At 39073, you may see huge short covering.
Banknifty trend decider level is 39320, 39070-38800-38300 is weekly support zone. Here, don't take any positional view. you can do intraday as per momentum