Viewing archive of Sunday, 21 April 2002

Sunspot numberNew regionsBackground fluxCX
160 -252 2C1.341

Solar flares

Region Start Maximum End
9906 X1.5 00:43 01:51 02:38
- C7.9 17:25 17:30 17:33
- C8.3 17:37 18:06 18:24
- C2.9 20:11 20:16 20:18
- C3.4 21:51 21:56 21:58

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/07/05Kp5 (G1)
Number of spotless days in 2018:130
Last spotless day:2018/08/13

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