Solar flares on December 20, 2002
The most powerful solar flare in 24 hours
M6.8 (strong) flare - December 20 at 1:18 PM
Solar activity index
Value as of the end of the day on December 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 19, 2002 to December 20, 2002
Time zone — UTC+00 (London)
List of solar flares for December 20, 2002
The total number of solar flares of class C and higher — 12 flares
C class — 11 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.0 | 23:17 | 23:21 | 23:24 | 226 |
| C1.7 | 23:01 | 23:04 | 23:07 | 226 |
| C7.2 | 20:10 | 20:14 | 20:16 | 226 |
| C3.5 | 18:57 | 19:04 | 19:06 | — |
| M6.8 | 13:13 | 13:18 | 13:20 | 226 |
| C4.2 | 12:47 | 12:53 | 12:57 | — |
| C2.7 | 11:25 | 11:28 | 11:30 | — |
| C8.5 | 08:20 | 08:33 | 08:45 | 226 |
| C1.9 | 07:57 | 08:02 | 08:07 | 226 |
| C1.6 | 05:36 | 05:41 | 05:55 | 230 |
| C1.4 | 01:42 | 01:45 | 01:47 | 230 |
| C4.5 | 00:32 | 00:37 | 00:42 | 226 |