when is the next sunspot maximum going to occur
Solar maximum Predictions of a future maximum's timing and strength are very difficult; predictions vary widely. There was a solar maximum in 2000. In 2006 NASA initially expected a solar maximum in 2010 or 2011, and thought that it could be the strongest since 1958.[3] However, the solar maximum was not declared to have occurred until 2014, and even then was ranked among the weakest on record.[4]