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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 activity index

Solar flares in 2 days

Chart of solar activity from Dec 20, 2023 to Dec 21, 2023

Time zone — UTC+00 (London)

Solar flares in 2 days
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 higher12 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