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Table 2
Start and end times of solar cycles 21, 22, and 23 in terms of Carrington rotation (CR) and calendar units.
| Solar cycles | Start | End |
|
|
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| Cycle 21 | CR 1642 (June 1976) | CR 1779 (August 1986) |
| Cycle 22 | CR 1780 (September 1986) | CR 1909 (April 1996) |
| Cycle 23 | CR 1910 (May 1996) | CR 2080 (December 2008) |
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