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Solar cycle 22
Solar activity from September 1986 to August 1996 / From Wikipedia, the free encyclopedia
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Solar cycle 22 was the 22nd solar cycle since 1755, when extensive recording of solar sunspot activity began.[1][2] The solar cycle lasted 9.9 years, beginning in September 1986 and ending in August 1996. The maximum smoothed sunspot number observed during the solar cycle was 212.5 (November 1989), and the starting minimum was 13.5.[3] During the minimum transit from solar cycle 22 to 23, there were a total of 309 days with no sunspots.[4][5][6]
Quick Facts Sunspot data, Start date ...
Solar cycle 22 | |
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![]() The Sun, with some sunspots visible, during solar cycle 22 (1992). | |
Sunspot data | |
Start date | September 1986 |
End date | August 1996 |
Duration (years) | 9.9 |
Max count | 212.5 |
Max count month | November 1989 |
Min count | 13.5 |
Spotless days | 309 |
Cycle chronology | |
Previous cycle | Solar cycle 21 (1976-1986) |
Next cycle | Solar cycle 23 (1996-2008) |
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