Solar flares on June 21, 2026
The most powerful solar flare in 24 hours
M6.8 (strong) flare - June 21 at 9:29 PM
Solar activity index
Value as of the end of the day on June 21, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 20, 2026 to June 21, 2026
Time zone — UTC+02 (Valletta) — summer time
List of solar flares for June 21, 2026
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M6.8 | 21:17 | 21:29 | 21:35 | 4473 |
| C2.6 | 20:07 | 20:18 | 20:21 | 4473 |
| C1.1 | 10:31 | 10:38 | 10:41 | 4473 |
| M2.6 | 04:25 | 04:46 | 04:58 | 4473 |
| C1.1 | 03:01 | 03:06 | 03:14 | 4473 |
| C1.3 | 01:01 | 01:06 | 01:12 | 4473 |