Magnetic storms on Dec 31, 1999
Geomagnetic storms on Dec 31, 1999
Geomagnetic storms were observed on Dec 31, 1999- Magnetic storm of level G1 (minor) from 21:00 to 00:00
Magnetic storms for the last 3 days
Max solar activity on Dec 31, 1999
No data for Dec 31, 1999