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Solar flares — June 28, 2025

June 28, 2025

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Solar flares on June 28, 2025

The most powerful solar flare in 24 hours

C4.0 (normal) flare - June 28 at 10:54 PM

Solar activity index

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

Solar activity index

Solar X-ray emission over the past 2 days

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

Time zone — UTC+03 (Murmansk)

Solar flares
PNG API: JSON | TXT

List of solar flares for June 28, 2025

The total number of solar flares of class C and higher — 2 flares

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

Class begin max end region
C4.0 22:40 22:54 23:01 4126
C1.1 06:58 07:10 07:21 4126