Sunspots and active regions — March 21, 2021
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2810 | N18 | E13 | 02 | 0010 | Alpha | Mar 23, 2021 | Mar 30, 2021 | Apr 13, 2021 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, March. Gray background - average solar cycle.
