Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 20, 2021. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2846 | N25 | E78 | 01 | 0030 | Alpha | Jul 27, 2021 | Aug 3, 2021 | Aug 17, 2021 |
| № 2845 | S16 | W32 | 04 | 0010 | Alpha | Jul 18, 2021 | Jul 25, 2021 | Aug 8, 2021 |
| № 2842 | N26 | W39 | 10 | 0090 | Beta | Jul 18, 2021 | Jul 25, 2021 | Aug 8, 2021 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1992 to July 2021. The gray background is the average SSN index.
