Watts Up with That: A typical solar minimum lasts 485 days, based on an average of the last 10 solar minima. As of today we are at 638 spotless days in the current minimum. Also as of today, May 27th, 2009, there were no sunspots on 120 of this year’s (2009) 147 days to date (82%).
Read this to find out why that matters.
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