ENG

About site
Projects
Project diary
Gallery
Astronomy news
Space weather today

Sun images
Geomagnetic storms online
Sun flares
Geomagnetic activity forecast
Active areas

April : 2017
su	mo	tu	we	th	fr	st
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30

Diary

Dec 8, 2025 Some news at the moment
Dec 8, 2025 Black Explosion
Dec 8, 2025 The largest solar spot complex of the year began to release energy, the first X flare occurred.

Diary's archive

Geomagnetic activity forecast in Philadelphia — Apr 21, 2017

Apr 21, 2017 Philadelphia

Previous day Next day

No data

© Laboratory of Solar Astronomy, SRI RAS