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Solar flares — Apr 21, 2024

The strongest solar flare in the day

Flare of M3.4 level (strong) — in 21:52

Solar activity index

Value for Apr 21, 2024 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 Apr 20, 2024 to Apr 21, 2024

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 Apr 21, 2024

Total number of flares of class C and higher9 flares

C type — 6 | M type — 3 | X type — 0

  start maximum end region
C3.7
23:37 23:45 23:49
C4.0
23:06 23:15 23:37 3655
M3.4
21:44 21:52 21:57 3638
C5.3
20:42 20:55 21:10 3647
M2.2
15:07 15:14 15:20 3638
M1.0
12:39 12:59 13:34 3645
C3.8
04:39 04:46 04:53 3638
C3.9
04:25 04:34 04:39 3638
C5.7
01:00 01:13 01:24 3645