Solar flares on March 21, 2025
The most powerful solar flare in 24 hours
M1.2 (strong) flare - March 21 at 9:58 AM
Solar activity index
Value as of the end of the day on March 21, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2025 to March 21, 2025
Time zone — UTC-06 (Lethbridge) — summer time
List of solar flares for March 21, 2025
The total number of solar flares of class C and higher — 3 flares
C class — 2 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.2 | 16:29 | 16:36 | 16:41 | 4036 |
| M1.2 | 09:34 | 09:58 | 10:23 | 4028 |
| C2.1 | 04:55 | 05:08 | 05:21 | 4034 |