Solar flares on July 21, 2026
The most powerful solar flare in 24 hours
M1.9 (strong) flare - July 21 at 12:27 PM
Solar activity index
Value as of the end of the day on July 21, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 20, 2026 to July 21, 2026
Time zone — UTC-05 (Lincoln) — summer time
List of solar flares for July 21, 2026
The total number of solar flares of class C and higher — 16 flares
C class — 15 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C6.8 | 22:32 | 22:38 | 22:45 | — |
| C1.4 | 22:14 | 22:23 | 22:32 | 4493 |
| C2.6 | 20:02 | 20:06 | 20:08 | 4493 |
| C2.4 | 19:02 | 19:11 | 19:15 | 4493 |
| C2.4 | 17:51 | 17:55 | 17:59 | 4493 |
| C2.0 | 17:31 | 17:40 | 17:45 | 4493 |
| C3.1 | 15:27 | 15:33 | 15:39 | 4493 |
| C2.9 | 14:16 | 14:24 | 14:26 | 4493 |
| M1.9 | 12:16 | 12:27 | 12:30 | 4493 |
| C3.3 | 12:04 | 12:07 | 12:13 | — |
| C5.1 | 11:05 | 11:08 | 11:10 | 4493 |
| C3.4 | 09:43 | 09:57 | 10:09 | 4493 |
| C3.1 | 09:31 | 09:38 | 09:43 | 4493 |
| C5.1 | 09:11 | 09:14 | 09:16 | — |
| C4.0 | 06:36 | 06:42 | 06:52 | 4493 |
| C7.7 | 04:40 | 04:56 | 05:05 | — |