Solar flares on May 20, 2026
The most powerful solar flare in 24 hours
C1.0 (normal) flare - May 20 at 6:09 AM
Solar activity index
Value as of the end of the day on May 20, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 19, 2026 to May 20, 2026
Time zone — UTC-04 (Louisville) — summer time
List of solar flares for May 20, 2026
The total number of solar flares of class C and higher — 2 flares
C class — 2 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 05:59 | 06:09 | 06:17 | 4439 |
| C1.0 | 00:12 | 00:43 | 01:13 | — |