If you use the add on HamCap program for propagation prediction, you may find that it doesn't work beyond December 2019. That's because the predicted sunspot numbers within it ended in December 2019.
See https://swling.com/blog/2020/01/ham-cap-and-voa-prop-fixing-ssn-look-up-files/ for a replacement SSN.dat file that can simply be pasted into it's app data directory to update it.
