If we observe the candle pattern for nifty or BNF today, it resembles the piercing pattern, which is not really considered as bullish, but might signal a trend reversal on the bullish side.
The piercing pattern is made up of two candlesticks, the first black and the second white. Both candlesticks should have fairly large bodies and the shadows are usually, but not necessarily, small or nonexistent. The white candlestick must open below the previous close and close above the midpoint of the black candlestick's body. A close below the midpoint might qualify as a reversal, but would not be considered as bullish.
Example:
The piercing pattern is made up of two candlesticks, the first black and the second white. Both candlesticks should have fairly large bodies and the shadows are usually, but not necessarily, small or nonexistent. The white candlestick must open below the previous close and close above the midpoint of the black candlestick's body. A close below the midpoint might qualify as a reversal, but would not be considered as bullish.
Example: