Solar flares on May 21, 2003
The most powerful solar flare in 24 hours
C1.2 (normal) flare - May 21 at 2:04 AM
Solar activity index
Value as of the end of the day on May 21, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from May 20, 2003 to May 21, 2003
Time zone — UTC-04 (Granby) — summer time
List of solar flares for May 21, 2003
The total number of solar flares of class C and higher — 1 flare
C class — 1 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.2 | 01:42 | 02:04 | 02:21 | 362 |