Solar flares — Oct 21, 2004
The strongest solar flare in the day
Flare of C9.9 level (normal) — in 20:48
Solar activity index
Value for Oct 21, 2004 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Oct 20, 2004 to Oct 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 Oct 21, 2004
Total number of flares of class C and higher — 7 flares
C type — 7 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C9.9
|
20:24 | 20:48 | 20:56 | 687 |
|
C4.3
|
16:12 | 16:22 | 16:27 | 682 |
|
C1.7
|
15:27 | 15:42 | 16:04 | 682 |
|
C5.2
|
07:44 | 07:53 | 07:57 | 687 |
|
C2.0
|
06:05 | 06:12 | 06:15 | 687 |
|
C4.3
|
03:10 | 03:15 | 03:18 | 687 |
|
C7.8
|
01:18 | 01:40 | 01:52 | 687 |