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Solar flares — Sep 17, 2023

The strongest solar flare in the day

Flare of C3.5 level (normal) — in 16:04

Solar activity index

Value for Sep 17, 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 Sep 16, 2023 to Sep 17, 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 Sep 17, 2023

Total number of flares of class C and higher1 flare

C type — 1 | M type — 0 | X type — 0

  start maximum end region
C3.5
15:55 16:04 16:10 3435