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Solar flares in September 1985
C-class3
M-class0
X-class0
LargestC4.31985-09-15
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| September 1984 | 4 | 0 | 0 | C8.5 |
| September 1985 | 3 | 0 | 0 | C4.3 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1985-09-15 | 07:33 | 07:36 | 24 | C4.3 | S11E53 | 4694 |
| 1985-09-13 | 07:35 | 07:36 | 10 | C1.7 | S14E81 | 4694 |
| 1985-09-12 | 17:35 | 17:38 | 5 | C1.2 | – | – |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
3 flares of class C or larger in September 1985; by M/X count it ranks 468 of 565 months.