Solar flares on May 21, 2023
The most powerful solar flare in 24 hours
M5.1 (strong) flare - May 21 at 12:06 AM
Solar activity index
Value as of the end of the day on May 21, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 20, 2023 to May 21, 2023
Time zone — UTC+01 (Dublin) — summer time
List of solar flares for May 21, 2023
The total number of solar flares of class C and higher — 14 flares
C class — 11 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.8 | 22:36 | 22:57 | 23:13 | 3305 |
| C4.3 | 21:55 | 22:01 | 22:16 | 3305 |
| M2.6 | 16:49 | 17:04 | 17:18 | 3311 |
| C4.6 | 16:04 | 16:17 | 16:29 | 3305 |
| C5.4 | 12:20 | 12:30 | 12:45 | 3305 |
| C4.9 | 09:27 | 09:34 | 09:48 | 3311 |
| C4.5 | 08:40 | 08:59 | 09:12 | 3305 |
| C4.1 | 07:40 | 07:49 | 07:53 | 3305 |
| C3.0 | 06:30 | 06:40 | 07:04 | 3311 |
| C3.0 | 05:57 | 06:03 | 06:08 | 3311 |
| C4.9 | 04:51 | 04:57 | 05:05 | 3311 |
| M1.4 | 03:18 | 03:23 | 03:33 | 3311 |
| C2.5 | 01:59 | 02:06 | 02:14 | 3305 |
| M5.1 | 23:52 | 00:06 | 00:21 | 3311 |