Viewing archive of Saturday, 25 September 1999

Sunspot numberNew regionsBackground fluxMaximum fluxC
38 -480 -1B2.9B9.41

Solar flares

RegionStartMaximumEnd
-C1.0 23:4500:3300:52
-B7.3 13:1813:2513:29
-B4.5 19:3219:3519:44

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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 2019:191
Current stretch spotless days:21

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