The SKA calendar for 2020 celebrates the SKA family of pathfinder telescopes. December focuses on the Effelsberg 100m radio-telescope — one of the largest fully steerable dishes on Earth. The telescope, operated by Germany’s Max Planck Institute for Radio Astronomy observes pulsars, cold gas- and dust-clusters, the sites of star formation, and jets of matter emitted from the nuclei or distant galaxies. Effelsberg is an important part of the European VLBI Network (EVN).