As chart shows a flag pattern has been formed in 30 min time frame and also bank nifty traded tightly today. which conclude that this range can burst out either bullish or bearish.
Another thing to notice a bullish wick reversal candle has formed which gives a hint for bullish side strength into bank nifty
May be a gap opening for tomorrow also expecting a trend day or more tight range day. Trade on retest only avoid flase breakouts
Resistance : 45600, 45800-900 Support : 45400, 45139
Note : Do your own analysis before making any trading decisions.