Solar flares on September 18, 2015
The most powerful solar flare in 24 hours
C3.9 (normal) flare - September 18 at 12:00 AM
Solar activity index
Value as of the end of the day on September 18, 2015
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 17, 2015 to September 18, 2015
Time zone — UTC+01 (London) — summer time
List of solar flares for September 18, 2015
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.4 | 12:16 | 12:36 | 12:47 | 2415 |
| C2.6 | 05:22 | 07:31 | 08:20 | 2415 |
| C1.0 | 05:00 | 05:04 | 05:17 | 2415 |
| C1.3 | 02:05 | 02:12 | 02:19 | 2415 |
| C3.9 | 23:56 | 00:00 | 00:05 | 2415 |