City-wise 2027 NDA coaching options: Minerva Academy, Mohali; Vashishthi IAS Academy, Ludhiana; New Careers Academy (NCA); Chanakya Defence Group, Chandigarh; Olive Greens Institute, Chandigarh; Nimbus Defence Academy, Chandigarh; and TIDES Academy, Chandigarh. Compare written and SSB routes, modes and fee checks.