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Solar flares — December 28, 2025

December 28, 2025

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Prague
Home Solar flares December 28, 2025

Solar flares on December 28, 2025

The most powerful solar flare in 24 hours

M4.2 (strong) flare - December 28 at 11:39 PM

Solar activity index

Value as of the end of the day on December 28, 2025

Solar activity index

Solar X-ray emission over the past 2 days

Chart of solar X-ray emission (1-8 Å) from December 27, 2025 to December 28, 2025

Time zone — UTC+01 (Prague)

Solar flares
PNG API: JSON | TXT

List of solar flares for December 28, 2025

The total number of solar flares of class C and higher — 10 flares

C class — 8 | M class — 2 | X class — 0

Class begin max end region
M4.2 23:01 23:39 23:54 4317
C6.8 22:48 22:53 22:56 4318
M1.3 22:03 22:13 22:23 4325
C4.0 20:17 21:08 21:40 4325
C2.9 16:02 16:09 16:16 4325
C2.8 12:57 13:08 13:21 4324
C3.2 09:09 09:20 09:34 4321
C4.0 08:22 08:28 08:35 4324
C3.3 06:57 07:08 07:10 4324
C2.6 06:35 06:39 06:57 4324