Solar flares on October 21, 2002
The most powerful solar flare in 24 hours
C6.3 (normal) flare - October 21 at 3:07 AM
Solar activity index
Value as of the end of the day on October 21, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2002 to October 21, 2002
Time zone — UTC+05:30 (Kankuria)
List of solar flares for October 21, 2002
The total number of solar flares of class C and higher — 10 flares
C class — 10 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.7 | 20:31 | 20:35 | 20:42 | 162 |
| C3.7 | 17:45 | 17:57 | 18:06 | 162 |
| C2.9 | 17:00 | 17:34 | 17:45 | — |
| C2.3 | 13:49 | 14:06 | 14:11 | 162 |
| C3.1 | 10:22 | 10:53 | 11:00 | 162 |
| C3.6 | 09:46 | 09:49 | 09:52 | 154 |
| C3.3 | 06:15 | 06:27 | 06:34 | 160 |
| C2.9 | 05:30 | 05:53 | 06:10 | — |
| C6.3 | 02:56 | 03:07 | 03:18 | — |
| C3.1 | 00:47 | 00:51 | 00:55 | 162 |