Open Access
Table 6
Dates of solar maximum.
| Solar cycle | Start date | End date |
|---|---|---|
| 21 | November 1, 1977 | October 31, 1984 |
| 22 | November 1, 1987 | October 31, 1994 |
| 23 | November 1, 1997 | October 31, 2004 |
| 24 | November 1, 2009 | October 31, 2016 |
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