Solar flares on May 21, 2025
The most powerful solar flare in 24 hours
M1.2 (strong) flare - May 21 at 2:08 AM
Solar activity index
Value as of the end of the day on May 21, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 20, 2025 to May 21, 2025
Time zone — UTC+02 (Kaliningrad)
List of solar flares for May 21, 2025
The total number of solar flares of class C and higher — 8 flares
C class — 7 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 20:04 | 20:07 | 20:11 | 4095 |
| C1.2 | 10:53 | 11:07 | 11:25 | 4093 |
| C1.2 | 05:42 | 05:49 | 05:52 | 4093 |
| C1.3 | 03:06 | 03:15 | 03:22 | 4093 |
| M1.2 | 02:01 | 02:08 | 02:10 | 4087 |
| C1.6 | 01:49 | 01:59 | 02:01 | 4087 |
| C1.6 | 00:39 | 00:47 | 00:51 | 4093 |
| C5.3 | 00:18 | 00:25 | 00:28 | 4087 |