Ephemeris refinement for TOI-4479 b using 66 transits (0 rejected, 4σ jackknife) from 3 TESS sectors (41, 55, 82; 1138 day, 982-cycle baseline). (a) O − C relative to A. Kokori et al. (2026), with the refined linear fit and 1σ band. (b) O − C relative to the ephemeris refined here. (c) Phase-folded per sector on the literature period. (d) As in (c), folded on the refined period.