Viewing archive of Thursday, 21 May 2015

Sunspot numberNew regionsBackground fluxMaximum fluxC
36 -250B2.0C1.211

Solar flares

RegionStartMaximumEnd
-B6.1 03:3303:4303:52
2346B6.3 05:2205:3705:53
2346B9.8 06:0106:1106:17
2349C1.1 06:5707:0607:17
-B4.2 20:3920:4720:56

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2020:16
Last spotless day:2020/01/23

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