Solar flares on June 21, 2026
The most powerful solar flare in 24 hours
M6.8 (strong) flare - June 21 at 1:29 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-06 (Edmonton) — summer time
List of solar flares for June 21, 2026
The total number of solar flares of class C and higher — 4 flares
C class — 3 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 16:30 | 16:34 | 16:42 | 4473 |
| M6.8 | 13:17 | 13:29 | 13:35 | 4473 |
| C2.6 | 12:07 | 12:18 | 12:21 | 4473 |
| C1.1 | 02:31 | 02:38 | 02:41 | 4473 |