Solar flares on March 21, 2011
The most powerful solar flare in 24 hours
C4.2 (normal) flare - March 21 at 10:49 PM
Solar activity index
Value as of the end of the day on March 21, 2011
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 20, 2011 to March 21, 2011
Time zone — UTC+05:30 (Ranchi)
List of solar flares for March 21, 2011
The total number of solar flares of class C and higher — 3 flares
C class — 3 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.2 | 21:01 | 22:49 | 00:00 | — |
| C1.0 | 17:22 | 17:27 | 17:33 | — |
| C2.6 | 17:15 | 17:17 | 17:20 | — |