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Magnetic storms on Sep 20, 1999
Sep 20, 1999
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Magnetic storms in September 1999
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Geomagnetic storms on Sep 20, 1999
No
geomagnetic storms
were observed on Sep 20, 1999
Magnetic storms for the last 3 days
Max solar activity on Sep 20, 1999
No data for Sep 20, 1999