Light curve fitting analysis for the second transit epoch (Epoch 2) of system simu 21. The system consists of a Jupiter-sized planet with a 30-day orbital period and a 3 R_⊕ exomoon on a 1-day orbital period. The gray points represent the synthetic photometric data generated by Pandora, which includes the perturbation from a 3 R_⊕ exomoon. The solid line indicates the best-fit planet-only model derived from PyTransit.