Solar flares on July 21, 2026
The most powerful solar flare in 24 hours
M3.6 (strong) flare - July 21 at 10:35 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-08 (Anchorage) — summer time
List of solar flares for July 21, 2026
The total number of solar flares of class C and higher — 17 flares
C class — 15 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.6 | 22:29 | 22:35 | 22:37 | — |
| C6.8 | 19:32 | 19:38 | 19:45 | — |
| C1.4 | 19:14 | 19:23 | 19:32 | 4493 |
| C2.6 | 17:02 | 17:06 | 17:08 | 4493 |
| C2.4 | 16:02 | 16:11 | 16:15 | 4493 |
| C2.4 | 14:51 | 14:55 | 14:59 | 4493 |
| C2.0 | 14:31 | 14:40 | 14:45 | 4493 |
| C3.1 | 12:27 | 12:33 | 12:39 | 4493 |
| C2.9 | 11:16 | 11:24 | 11:26 | 4493 |
| M1.9 | 09:16 | 09:27 | 09:30 | 4493 |
| C3.3 | 09:04 | 09:07 | 09:13 | — |
| C5.1 | 08:05 | 08:08 | 08:10 | 4493 |
| C3.4 | 06:43 | 06:57 | 07:09 | 4493 |
| C3.1 | 06:31 | 06:38 | 06:43 | 4493 |
| C5.1 | 06:11 | 06:14 | 06:16 | — |
| C4.0 | 03:36 | 03:42 | 03:52 | 4493 |
| C7.7 | 01:40 | 01:56 | 02:05 | — |