Thread: Some CaK Sunnage
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Old 31-01-2019, 09:01 AM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
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Tareq,
It's part of the 11 year solar cycle, next maximum activity should be around 2024.

https://en.wikipedia.org/wiki/Solar_cycle
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