Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 21, 2025. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 4227 | S17 | E65 | 03 | 0030 | Beta | Sep 27, 2025 | Oct 4, 2025 | Oct 18, 2025 |
| № 4226 | S11 | E65 | 02 | 0030 | Beta | Sep 27, 2025 | Oct 4, 2025 | Oct 17, 2025 |
| № 4225 | N10 | E25 | 04 | 0210 | Beta | Sep 24, 2025 | Oct 1, 2025 | Oct 14, 2025 |
| № 4224 | S13 | E09 | 04 | 0030 | Beta | Sep 23, 2025 | Sep 30, 2025 | Oct 13, 2025 |
| № 4223 | S15 | E05 | 04 | 0040 | Beta | Sep 23, 2025 | Sep 29, 2025 | Oct 13, 2025 |
| № 4221 | N03 | W13 | 03 | 0060 | Beta | Sep 21, 2025 | Sep 28, 2025 | Oct 11, 2025 |
| № 4220 | S19 | W43 | 19 | 0290 | Beta-Gamma | Sep 19, 2025 | Sep 26, 2025 | Oct 9, 2025 |
| № 4219 | N24 | W86 | 01 | 0010 | Alpha | Sep 16, 2025 | Sep 22, 2025 | Oct 6, 2025 |
| № 4217 | S15 | W08 | 09 | 0230 | Beta | Sep 22, 2025 | Sep 28, 2025 | Oct 12, 2025 |
| № 4216 | N10 | W47 | 06 | 0090 | Beta-Gamma | Sep 19, 2025 | Sep 25, 2025 | Oct 9, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to September 2025. The gray background is the average SSN index.
