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December : 2009
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Diary

Jun 1, 2020 The first major spike in solar activity in the new cycle has ended
May 29, 2020 The major spike in solar activity in recent years continues - new largest solar flare has occurred
May 29, 2020 The largest flare in the last three years occured on Sun

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Geomagnetic storms in Saint Petersburg — Dec 31, 2009

Dec 31, 2009 Saint Petersburg

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