Nearly 20 lakh people in Assam face the risk of losing citizenship after being excluded from the National Register of Citizens. While they've been assured that they can appeal against their exclusion within 120 days, a closer look reveal a huge legal challenge - 20 lakh cases in 120 days, which works out to over 16,000 appeals a day. Can Assam's 'illegals' meet this impossible deadline? Reality check discusses.