Solar flares on October 21, 2015
The most powerful solar flare in 24 hours
C7.7 (normal) flare - October 21 at 11:26 PM
Solar activity index
Value as of the end of the day on October 21, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 20, 2015 to October 21, 2015
Time zone — UTC+05:30 (Shimla)
List of solar flares for October 21, 2015
The total number of solar flares of class C and higher — 8 flares
C class — 8 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.7 | 23:18 | 23:26 | 23:30 | 2436 |
| C1.1 | 19:58 | 20:01 | 20:03 | 2436 |
| C1.7 | 19:22 | 19:28 | 19:34 | 2436 |
| C2.6 | 17:21 | 17:30 | 17:37 | 2436 |
| C2.7 | 11:01 | 11:07 | 11:13 | 2436 |
| C6.3 | 09:59 | 10:04 | 10:06 | 2436 |
| C1.6 | 07:30 | 07:39 | 07:44 | 2436 |
| C1.7 | 05:42 | 05:49 | 05:53 | 2436 |