Viewing archive of Monday, 21 September 2015

Sunspot numberNew regionsBackground fluxMaximum fluxC
68 -60 -1B2.9C8.884

Solar flares

RegionStartMaximumEnd
2420C2.8 00:1000:2100:29
2420C4.2 01:5702:0402:08
2420B6.3 03:2903:3303:37
2420C1.5 03:5404:0004:05
2420C8.8 05:1105:1805:22
2415B5.3 14:4714:5014:54
2420B5.4 18:5218:5318:54

<< Go to daily overview page

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

12%

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:72
Last spotless day:2020/03/30

This day in history*

Solar flares
12002M6.1
21999M5.4
32001M2.0
42003M1.9
52001M1.6
ApG
1199459G3
2200328G1
3200526G2
4200123G1
5200022G1
*since 1994

Social networks