December 21 , Northern Hemisphere

As the Sun rides Capricorn and sinks low.
We here know our shortest day of the year.
Yet in a seasons time equator ride.
And season after this sun rides the crab.
But this day is the solstice winter cold.
When we do celebrate our Masters Birth.
Regardless of the time that He was born.
The Gaelics called this time of old the Yule.
And trees they used to symbolize this day.
O Christmas Tree O Gaelic custom old.
Held over to this removed modern day..
What else, if truth be told, of Christmastime,
Did Constantine at council old decree
Be observed for all time till modern day.