Predicted departure from the current linear transit ephemeris for HATS-18 b. The mustard line traces the dissipation through the WNL effects for Q′_⋆,WNL ≈ 5.5 × 10⁵ derived from Weinberg et al. (2024). A blue area illustrates predictions of the gyrochronological analysis by Penev et al. (2016) with Q′_⋆ between 1.0 × 10⁷ (lower envelope) and 2. 4 × 10⁷ (upper envelope). The data points are the same as in Fig. 3. The uncertainties of the linear ephemeris are illustrated with 100 lines drawn from the posterior distribution.