Solar flares on October 20, 2002
The most powerful solar flare in 24 hours
M1.8 (strong) flare - October 20 at 6:28 PM
Solar activity index
Value as of the end of the day on October 20, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 19, 2002 to October 20, 2002
Time zone — UTC+04 (Samara)
List of solar flares for October 20, 2002
The total number of solar flares of class C and higher — 17 flares
C class — 13 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.1 | 23:17 | 23:21 | 23:25 | 162 |
| C2.6 | 21:52 | 22:05 | 22:10 | 154 |
| M1.8 | 18:21 | 18:28 | 18:35 | 160 |
| C6.6 | 18:10 | 18:13 | 18:21 | 154 |
| C5.9 | 17:51 | 18:02 | 18:10 | 162 |
| C2.8 | 14:25 | 14:37 | 14:44 | — |
| C2.4 | 13:09 | 13:15 | 13:19 | 158 |
| C2.0 | 12:59 | 13:03 | 13:06 | 162 |
| C3.6 | 10:11 | 10:14 | 10:17 | 162 |
| C6.9 | 09:27 | 09:31 | 09:34 | 154 |
| M1.2 | 09:01 | 09:14 | 09:19 | 160 |
| M1.5 | 07:31 | 07:39 | 08:00 | 162 |
| C7.5 | 06:19 | 06:23 | 06:27 | 160 |
| M1.8 | 04:32 | 04:45 | 05:11 | 162 |
| C7.9 | 02:46 | 03:01 | 03:14 | — |
| C5.0 | 01:11 | 01:16 | 01:21 | 154 |
| C5.9 | 23:59 | 00:20 | 00:35 | 162 |