Solar flares — Sep 21, 2004
The strongest solar flare in the day
Flare of C7.5 level (normal) — in 09:36
Solar activity index
Value for Sep 21, 2004 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 20, 2004 to Sep 21, 2004
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Sep 21, 2004
Total number of flares of class C and higher — 1 flare
C type — 1 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C7.5
|
09:30 | 09:36 | 09:39 | 672 |