Solar flares — Sep 21, 2021
The strongest solar flare in the day
Flare of C1.8 level (normal) — in 11:53
Solar activity index
Value for Sep 21, 2021 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Sep 20, 2021 to Sep 21, 2021
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Sep 21, 2021
Total number of flares of class C and higher — 22 flares
C type — 3 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
B4.1
|
23:51 | 23:55 | 23:59 | 2872 |
|
B5.1
|
20:15 | 20:25 | 20:30 | 2871 |
|
B1.6
|
19:07 | 19:15 | 19:23 | 2871 |
|
C1.1
|
18:18 | 18:28 | 18:35 | 2871 |
|
B2.1
|
18:05 | 18:16 | 18:18 | 2871 |
|
B1.7
|
18:08 | 18:11 | 18:18 | 2871 |
|
B1.5
|
16:57 | 17:03 | 17:07 | 2871 |
|
B1.6
|
14:19 | 14:29 | 14:35 | 2873 |
|
B3.2
|
12:31 | 12:38 | 12:44 | 2871 |
|
B1.7
|
12:23 | 12:29 | 12:31 | 2871 |
|
C1.8
|
11:43 | 11:53 | 11:57 | 2873 |
|
B5.0
|
11:07 | 11:11 | 11:16 | 2873 |
|
B8.7
|
10:06 | 10:16 | 10:21 | 2873 |
|
B2.9
|
09:50 | 09:55 | 09:59 | 2871 |
|
B2.3
|
09:42 | 09:48 | 09:50 | 2871 |
|
C1.1
|
08:53 | 09:03 | 09:16 | 2873 |
|
B2.0
|
08:20 | 08:26 | 08:32 | — |
|
B2.3
|
06:44 | 06:49 | 06:54 | 2873 |
|
B3.1
|
05:20 | 05:29 | 05:36 | 2871 |
|
B4.1
|
04:57 | 05:09 | 05:13 | 2871 |
|
B2.1
|
04:26 | 04:29 | 04:39 | 2871 |
|
B2.6
|
03:33 | 03:40 | 03:46 | 2871 |