The Solar cross is probably the oldest religious symbol in the world, appearing in Asian, American, European, and Indian religious art from the dawn of history. Composed of a equal armed cross within a circle, it represents the solar calendar- the movements of the sun. Sometimes the equinoxes are marked as well, giving an eight armed wheel. The swastika is also a form of Solar cross. The sun cross in its most simplified form is known in Northern Europe as Odin’s cross.