Viewing archive of Sunday, 21 September 1997

Solar flares

RegionStartMaximumEnd
-C2.6 04:1104:1704:20
-B3.8 05:4905:5405:58
-B2.6 07:5007:5407:59
-B5.7 09:1709:2409:28
-B3.2 20:4420:4920:53
-B2.1 23:0123:0423:08

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/02Kp5 (G1)
Number of spotless days in 2019:190
Current stretch spotless days:21

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