Dates of the minima and maxima of past solar cycles, with the corresponding sunspot number, based on the 13-month smoothed monthly sunspot number time series.
| Number | Year | Month | SN | Year | Month | SN |
|---|---|---|---|---|---|---|
| 1 | 1755 | 2 | 14 | 1761 | 6 | 144,1 |
| 2 | 1766 | 6 | 18,6 | 1769 | 9 | 193 |
| 3 | 1775 | 6 | 12 | 1778 | 5 | 264,2 |
| 4 | 1784 | 9 | 15,9 | 1788 | 2 | 235,3 |
| 5 | 1798 | 4 | 5,3 | 1805 | 2 | 82 |
| 6 | 1810 | 7 | 0 | 1816 | 5 | 81,2 |
| 7 | 1823 | 5 | 0,1 | 1829 | 11 | 119,2 |
| 8 | 1833 | 11 | 12,2 | 1837 | 3 | 244,9 |
| 9 | 1843 | 7 | 17,6 | 1848 | 2 | 219,9 |
| 10 | 1855 | 12 | 6 | 1860 | 2 | 186,2 |
| 11 | 1867 | 3 | 9,9 | 1870 | 8 | 234 |
| 12 | 1878 | 12 | 3,7 | 1883 | 12 | 124,4 |
| 13 | 1890 | 3 | 8,3 | 1894 | 1 | 146,5 |
| 14 | 1902 | 1 | 4,5 | 1906 | 2 | 107,1 |
| 15 | 1913 | 7 | 2,5 | 1917 | 8 | 175,7 |
| 16 | 1923 | 8 | 9,3 | 1928 | 4 | 130,2 |
| 17 | 1933 | 9 | 5,8 | 1937 | 4 | 198,6 |
| 18 | 1944 | 2 | 12,9 | 1947 | 5 | 218,7 |
| 19 | 1954 | 4 | 5,1 | 1958 | 3 | 285 |
| 20 | 1964 | 10 | 14,3 | 1968 | 11 | 156,6 |
| 21 | 1976 | 3 | 17,8 | 1979 | 12 | 232,9 |
| 22 | 1986 | 9 | 13,5 | 1989 | 11 | 212,5 |
| 23 | 1996 | 8 | 11,2 | 2001 | 11 | 180,3 |
| 24 | 2008 | 12 | 2,2 | 2014 | 4 | 116,4 |
| 25 | 2019 | 12 | 1,8 |