Also, it's not a sun symbol.
Kinda is.
Take kolovrat, symbol for Sun or flow of life, make it straight and you get cute puppy.
Perkunas aka Perun, Svarog, basically same shit yet modern scientists are trying to classify paganism like it makes more sense than different groups of people in different territories worshiping similar deity which was personification of natural phenomena (Sun, thunder, death, birth etc).
One remote settlement = one deity going by name A, another remote settlement 20 kms south = same deity going by name B. Just like Oberyn called you Lithuanian, while in fact you're Latvian, to me all Soviets are the same