In fact, it's not even a tradition in a non-religious sense of the word
What is a Tradition?
Tradition is defined as "The transmission of customs or beliefs from generation to generation, or the fact of being passed on in this way."
When a certain 'way of doing things' is passed on from parent to child, to grandchild, etc, without any substantial change, it then becomes that family's tradition. It becomes their traditional way of doing things.
Therefore, any customary behavior repeated by a given group over eons certainly qualifies as a tradition.
WINTER SOLSTICE -- 4TH WEEK OF DECEMBER
Recent archaeological digs at 'Stonehenge' have revealed the importance of a celebration by stone-age people at the time of the winter solstice. This winter solstice celebration has recently been determined by identifying and mapping the exact direction of the processional paths which pilgrims took at the annual festival. The final leg of the processional path rose up from the Avon River and took pilgrims over several low ridges to glimpse and approach Stonehenge with the afternoon sun directly behind the Henge. They looked directly into the sun as they made their approach. This was not by accident, it was planned. To approach Stonehenge in this fashion with its huge stone monuments, would have been a truly impressive experience.
ARTIFACTS
Stone-age people came to the festival from all over England, as well as far away as Scotland. Archaeologists have determined this by the examination of 'pigs' teeth which are by far the most abundant artifact found at the site. Testing of the teeth can reveal in which district each of the pigs were raised, and thus it is now known that the pilgrims brought their feasting pig with them from home as they made their pilgrimage on this important occasion.
LOST TRADITION
There is no longer a tradition of a pilgrimage along the processional way to Stonehenge at the time of the winter solstice. It is no longer practiced. It is lost.
CONTINUING TRADITION
I was raised in a home where we had an annual tradition of celebrating Christmas with what we called the traditional 'Christmas Ham.' My mother now lives on her own, and is to have her 95th birthday in seven weeks time. She still buys a huge ham at Christmas, every Christmas, absolutely every Christmas. It is her tradition. She has always done it, and always will.
4TH WEEK OF DECEMBER
In my youth, little did I realize that our family tradition was celebrated by people in the stone-age. The tradition was established long before the birth of Christ. Yet even now, at about the time of the winter solstice, we still feast on Christmas Ham. What a long-standing tradition.
As with a lot of traditions, we often don't recognize when they started, or why we do them -- they're just traditions.
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