Optical light curves of SN 2020xga (left panel) and SN 2022xgc (right panel). The magnitudes are corrected for MW extinction and K-correction. Upper limits are presented as downward-pointing triangles in a lighter shade. The epochs of the spectra are marked as thick lines at the top of the figure. The dashed line represents the estimated time of the first light. The x axis is in rest-frame days with respect to the rest-frame g-band maximum.