nifty traded two consecutive days as losing days, given close below 38.2 and taken support at .5 level. As tomorrow is expiry, this 38.2 and .5 zone might be taken as important levels. An hourly close above 18312 might take nifty 18450 close and hourly close below 18221 might take nifty to 18100, 18050 as per atr value of nifty . these levels can be trusted as per to the chart. And the gann fan levels will of course prove as resistance trendlines.