I struggled for a moment trying to say...it is an attempt to encode the structure of the cosmos within a physical space.
I struggled because what it is does not explain the function such a model could supply.
Even if the solar cross was perfectly aligned..
Its function is more than a calender
It encapsulated meanings beyond words.
The inner cruciform surrounded by circles creates a link between earth, sky and the Underworld..
And once, long ago, that was important.
Suis meant god in Hittite
Comes from an Indo-European root meaning to shine..
But in Mesopotamian religion, all gods shone with terrifying radiance
So the shining god as a specific god is a difference...
But the word seems to mean god..
So the sun goddess of Proto-Indo-European myth would be Suis Arinna or Suis Lelwani?
The sun Goddess of the Underworld received offerings at funerals.
Similar iconography, the sun wheel, the boat, the twins, turns up in Scandinavia.
The Egtved girl.