21st of December 2020 is an extremely interesting astronomical day, so in order to celebrate it, I have interviewed Dr. Johanna Hartke – an outstanding astronomer who works for the European Southern Observatory at the Paranal observatory in Chile. What makes 21st of December so special? In addition to the winter solstice – when we mark the shortest day in the year and the official start of the winter - this year we also enjoy two other exciting astronomical events: the peak of the Ursids meteor shower and the so-called “great conjunction” of Jupiter and Saturn.