Solar flares — Apr 21, 2021
The strongest solar flare in the day
Flare of C1.5 level (normal) — in 01:29
Solar activity index
Value for Apr 21, 2021 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 20, 2021 to Apr 21, 2021
Time zone — UTC+00 (London)
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 21, 2021
Total number of flares of class C and higher — 20 flares
C type — 1 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
B2.6
|
22:39 | 22:48 | 22:55 | 2817 |
|
B6.3
|
19:27 | 19:32 | 19:37 | 2816 |
|
B4.6
|
18:51 | 19:01 | 19:05 | 2817 |
|
B2.1
|
18:10 | 18:19 | 18:23 | 2816 |
|
B6.4
|
16:51 | 16:58 | 17:03 | 2817 |
|
B5.4
|
16:31 | 16:40 | 16:49 | 2817 |
|
B4.9
|
15:08 | 15:29 | 15:50 | 2817 |
|
B1.5
|
14:28 | 14:35 | 14:39 | 2816 |
|
B2.5
|
12:56 | 13:03 | 13:12 | 2817 |
|
B2.1
|
11:44 | 11:51 | 12:08 | 2817 |
|
B1.8
|
10:40 | 10:47 | 11:00 | 2817 |
|
B1.2
|
09:07 | 09:12 | 09:24 | 2817 |
|
B3.2
|
08:31 | 08:35 | 08:39 | 2817 |
|
B2.9
|
08:13 | 08:19 | 08:31 | 2817 |
|
B1.7
|
05:34 | 05:42 | 05:48 | 2817 |
|
B3.3
|
04:14 | 04:18 | 04:23 | 2817 |
|
B4.0
|
03:35 | 03:46 | 03:58 | 2817 |
|
B4.8
|
02:58 | 03:02 | 03:06 | 2817 |
|
B3.5
|
02:37 | 02:47 | 02:53 | — |
|
C1.5
|
01:18 | 01:29 | 01:41 | 2817 |