hourly is not a hammer...amit, there are some situation which demand reversals as said by saint sir:
a)30min Chart is making LH-LL,60min is making LH-LL,and the 15min makes a non-visual pivot break.........will not show up on the 30,60,so no reversal.
b)30min Chart is making LH-LL,then forms a Hammer....15min charts no higher pivot low.....60min charts still bearish.....no reversal
c)30min chart is making LH-LL,......then a doji or a hammer with bottoming tails........15min shows up as a higher pivot low or sideways pattern.....60min shows a doji,etc......Reversal!
d)30min chart shows LL-LH,.......15min shows lower pivot highs and lows.....60min shows yet another bearish candle.........and then a swift move past the previous high on the bearish candle on the 60min chart......Reversal!
e)30min chart shows LL-LH.......all time frames down....and then a WRB on high volume that closes near its lows,followed by a bullish candle(no problem....resting candle....expect the next move to be a continuation move down......not getting it is reversal...Buy above the bullish candle.
hope it helps
vineet