Solar flares — Dec 21, 2023
The strongest solar flare in the day
Flare of M4.2 level (strong) — in 05:38
Solar activity index
Value for Dec 21, 2023 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from Dec 20, 2023 to Dec 21, 2023
Time zone — UTC+00 (London)

This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Dec 21, 2023
Total number of flares of class C and higher — 12 flares
C type — 11 | M type — 1 | X type — 0
start | maximum | end | region | |
---|---|---|---|---|
C4.0
|
21:14 | 21:21 | 21:25 | 3529 |
C2.0
|
20:22 | 20:30 | 20:40 | 3519 |
C1.8
|
20:03 | 20:10 | 20:22 | 3519 |
C4.1
|
19:03 | 19:07 | 19:12 | 3526 |
C3.1
|
17:52 | 18:03 | 18:10 | 3519 |
C2.1
|
16:16 | 16:25 | 16:36 | 3524 |
C2.1
|
12:16 | 12:21 | 12:29 | 3528 |
C2.2
|
10:15 | 10:25 | 10:29 | 3521 |
C2.2
|
10:04 | 10:10 | 10:15 | 3521 |
M4.2
|
05:19 | 05:38 | 05:49 | 3519 |
C3.9
|
02:14 | 02:18 | 02:22 | 3529 |
C5.4
|
00:01 | 00:06 | 00:10 | 3529 |