The Python-based solid Earth tides (PySolid) is a thin Python wrapper of the solid.for program (by Dennis Milbert based on dehanttideinelMJD.f from V. Dehant, S. Mathews, J. Gipson and C. Bruyninx) to calculate solid Earth tides in the east/north/up direction (section 7.1.1 in the 2010 IERS Conventions). Solid Earth tides introduce large offsets in SAR observations and long spatial wavelength ramps in InSAR observations, as shown in the Sentinel-1 data with regular acquisitions and large swaths (Yunjun et al., 2022).