Viewing archive of Tuesday, 21 October 1997

Sunspot numberNew regionsBackground fluxMaximum fluxC
27 20A4.8C3.11

Solar flares

RegionStartMaximumEnd
-B3.4 02:2702:3602:47
8097C3.3 17:0017:5418:16

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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 2019:132
Current stretch spotless days:14

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