Solar flares on May 21, 2025
The most powerful solar flare in 24 hours
M1.2 (strong) flare - May 21 at 3:08 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+03 (Simferopol)
List of solar flares for May 21, 2025
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.6 | 21:04 | 21:07 | 21:11 | 4095 |
| C1.2 | 11:53 | 12:07 | 12:25 | 4093 |
| C1.2 | 06:42 | 06:49 | 06:52 | 4093 |
| C1.3 | 04:06 | 04:15 | 04:22 | 4093 |
| M1.2 | 03:01 | 03:08 | 03:10 | 4087 |
| C1.6 | 02:49 | 02:59 | 03:01 | 4087 |
| C1.6 | 01:39 | 01:47 | 01:51 | 4093 |
| C5.3 | 01:18 | 01:25 | 01:28 | 4087 |
| C2.1 | 00:20 | 00:30 | 00:34 | 4087 |