Nifty opens Gap down at 18600 vs the previous close at 18701.
Since nifty opened at support around 18600-18550, we saw some recovery from there and it closed near the day's high at 18642.
Now what's for tomorrow:-
Above 18550 - the next resistance is at 18700-18720
Immediate support @ 18550-18600
Sustaining above these levels, the index can move towards 18700-18720, above these levels, the index is likely to trend better.
Below 18550 - next support is at 18160
Trending above 18720
Trending below 18500