Solar flares on June 17, 2025
The most powerful solar flare in 24 hours
X1.2 (very strong) flare - June 17 at 11:49 PM
Solar activity index
Value as of the end of the day on June 17, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 16, 2025 to June 17, 2025
Time zone — UTC+02 (Berlin) — summer time
List of solar flares for June 17, 2025
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 0 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| X1.2 | 23:38 | 23:49 | 23:54 | 4114 |
| C3.4 | 22:48 | 22:59 | 23:11 | — |
| C2.3 | 22:34 | 22:38 | 22:42 | 4114 |
| C5.5 | 10:06 | 10:13 | 10:16 | — |
| C9.9 | 08:14 | 08:21 | 08:27 | — |
| C6.8 | 03:15 | 03:26 | 03:33 | 4114 |
| C4.1 | 02:49 | 02:53 | 02:56 | 4113 |
| C4.5 | 01:02 | 01:09 | 01:12 | 4114 |