Viewing archive of Saturday, 17 April 2004

Sunspot numberNew regionsBackground fluxMaximum fluxC
55 20 -1B1.0C1.811

Solar flares

RegionStartMaximumEnd
0595B3.7 04:4905:0105:06
-C1.8 11:3411:4211:51
-B1.5 18:3318:3618:38

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/07/10Kp5 (G1)
Number of spotless days in 2019:129
Current stretch spotless days:11

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