Solar flares — Sep 17, 2021
The strongest solar flare in the day
Flare of C3.5 level (normal) — in 04:20
Solar activity index
Value for Sep 17, 2021 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 16, 2021 to Sep 17, 2021
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Sep 17, 2021
Total number of flares of class C and higher — 1 flare
C type — 1 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C3.5
|
04:09 | 04:20 | 04:48 | — |