rowanwitch; //Surely the god thing rep!aced the veneration of the natural cycles of the earth, not the other way round.//
Absolutely right! early civilizations worshipped the sun, because though they didn't know what it was, they were aware that it sustained them, so its veneration was both intellectually & spiritually right & comprehensible to us today.
We now know that the sun has a material, astrological reality, as we also know exactly what conditions produce the solstices & there's nothing spiritual about any of it.
So wishing people a happy solstice is not only daft, it has no place in 'Religion & Spirituality', I think.