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Meteor ShowersSolar Eclipses

A.2 Sunspots (max every 11 years; occur in daylight)

Maximum sunspot activity occurred in the following years.

1770 1781 1791 1807 1820 1835 1841 1852 1863 1876

1891 1902 1913 1924 1935 1946 1957 1968 1979 1990

Minimum activity, with almost no spots, occurred halfway between the maximums indicated here. Sunspot activity usually reaches a maximum every 11 years. This 11-year period, however, is not uniform; for example, there is a 16-year gap from 1791 to 1807, and from 1645 to 1715 activity virtually ceased.

Meteor ShowersSolar Eclipses



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