Viewing archive of Monday, 21 April 2003

Sunspot numberNew regionsBackground fluxCM
154 612 1B3.031

Solar flares

Region X-ray Start Maximum End
- B9.9 02:23 02:31 02:44
- B7.7 06:44 06:50 06:55
0338 M2.8 12:54 13:07 13:14
0337 C2.3 15:51 15:59 16:03
- B7.6 17:23 17:26 17:29
- B5.5 18:54 18:58 19:03
0339 C1.3 19:29 19:35 19:41
0337 C1.8 21:23 21:47 22:13

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/04/20Kp6 (G2)
Number of spotless days in 2018:65
Last spotless day:2018/04/18

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