The Square Kilometre Array (SKA) calendar for 2020 celebrates the SKA family of pathfinder telescopes. February focuses on NenuFAR, the SKA pathfinder built in Nancay, France. It is a large array, of more than 1200 antennas, designed to observe the largely unexplored frequency window from 10 to 85 MHz. NenuFAR’s science program started in July 2019.