In our monograph Formation of weather conditions in marine and coastal areas (2007), high-amplitude positive temperature anomalies were drawn on December 15 and January 17 each year. Anomalies last approximately 3 days. These days, the temperature of groundwater and soil at a depth of 3 meters can increase by 5 degrees Celsius. Around January 19, after the end of the positive temperature anomaly, cooling occurs annually, sometimes by 10-15 degrees. On the territory of Russia, this climatic phenomenon is called "Epiphany frosts" (according to the Julian calendar, the Baptism of Christ on January 19). It was hypothesized that temperature changes in the surface layer of the northern hemisphere on December 15 and January 16 are associated with the intersection of the Earth's orbit with the Milky Way plane. It was a hypothesis. Now my graduate student Vadim Dolya has conducted research and found experimental confirmation of this hypothesis. See the diagram https://www.physicsforums.com/threads/orientation-of-the-earth-sun-and-solar-system-in-the-milky-way.888643/page-3. Now it has become a theory? If this is so, then in the warm season in the southern hemisphere on December 15 and January 17 of each year there should be negative temperature anomalies. On June 16 and July 18, there should be a cold snap in the northern hemisphere and a warming in the southern hemisphere. It is important to look at the dates March 14 and September 13. In the northern hemisphere on March 14 each year there is a decrease in temperature. On September 13, there may be a similar cold snap. Look at the diagram.