Solar flares on March 21, 2026
The most powerful solar flare in 24 hours
C1.1 (normal) flare - March 21 at 10:07 AM
Solar activity index
Value as of the end of the day on March 21, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2026 to March 21, 2026
Time zone — UTC-06 (Cheyenne) — summer time
List of solar flares for March 21, 2026
The total number of solar flares of class C and higher — 1 flare
C class — 1 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.1 | 09:58 | 10:07 | 10:09 | 4399 |