Transit times of WASP-47d. Upper panel: observed - calculated (O–C) diagram. The O–C was calculated by subtracting the predicted T₀ calculated from the linear ephemeris to the observed transit times. The O–C values computed from the observed T₀s are plotted as open orange circles, while the O–C of the TRADES-simulated T₀s from the best-fit model are plotted as blue circles. Samples drawn from the posterior distribution within HDI are shown as grey lines. Lower panel: Residuals computed as the difference between observed and simulated T₀s.