NASA has a video about the next Solar Cycle. Every 11 years your planet’s yellow star goes through a cycle of more or less activity.
This activity can effect the layers of your planet’s atmosphere. In turn that impacts the propagation of radio waves.
We are at a minimum of the 11 cycle. Hopefully, for the sake of amateur radio operators, we will emerge from this minimum and get onto the upward slope of the sine wave.
How not to moderate, but good information.