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May : 2017
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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

Diary's archive

Geomagnetic activity forecast in Philadelphia — May 11, 2017

May 11, 2017 Philadelphia

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