Solar flares on June 20, 2025
The most powerful solar flare in 24 hours
M1.0 (strong) flare - June 20 at 1:40 PM
Solar activity index
Value as of the end of the day on June 20, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 19, 2025 to June 20, 2025
Time zone — UTC-04 (Lansing) — summer time
List of solar flares for June 20, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.0 | 21:00 | 21:05 | 21:07 | 4114 |
| C2.2 | 14:38 | 14:48 | 14:51 | — |
| M1.0 | 13:21 | 13:40 | 13:59 | 4117 |
| C3.6 | 11:01 | 11:04 | 11:06 | 4114 |
| C1.1 | 08:58 | 09:05 | 09:08 | — |
| C1.1 | 04:56 | 05:03 | 05:10 | — |