BankNifty→ After moving down, it takes reversal in move up. Gives a positive closing. Near 41800=Resistance, but still in the range. Upper side breakout may happen.
Flat opening - Due to continuous upmove, no buying on feat, unless it gives some pullback. Breakout is possible 4th time coming near resistance.
Gap up → Resistance already broken, will wait for price action to sell near 42k.
Gap down - Again will be in range, support at 41500, so it may reverses from there, look for buying price action.