i got 91.15 percentile in jee mains jan canI get nit In OBC category

HELLO PAVAN
since it is very difficult to predict the exact rank but we do have a backup we have a formula to calculate the expected rank that is (100 – Total percentile) x 869010/100.So according to formula your expected rank for present percentile for January session comes out to be 73865. Now the expected rank might change depending on the no of candidates appearing the april session. For ex if 12 lakh candidate appear the april session then just replace 869010 by 12 lakhs. But if you score above 85 percentile then you have a very decent chance of qualifying jee mains.

Now since the official cutoffs  fro college are yet to be decided but let us analyse your chances by looking into the previous year cutoffs data
Well it's a little difficult to calculate the rank based on categories but if we look into the previous year datas to get a good NIT for general category is around 98+. Then we can expect the obc cutoff for good NIT would be more than 97+.

After looking into the data it seems a little difficult for you to enter this institute

No worries since you have an april attempt left and most importantly baap of the exams i,e Advance which may directly lead you into IIts.

But if you are curious to know that which college you might land into with your percentile then you can use the college predictor link which has following features;

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