Origins of Christmas

What is one of the world's oldest holidays that includes:
- Elaborate rituals & ceremonies
- House decorations of evergreen plants such as holly and mistletoe.
- A time of unrestrained rejoicing, with revelry, drinking, and gluttonous feasts.
- A celebration held one week prior to the winter solstice.

Christmas you say?

Nope. “Christ's Mass”, instituted by the Roman Catholic Church, has only been around +/-1600 yrs.
The answer is actually the Winter Solstice festival. It was held in honor of the (bastard) son of Nimrod, the Babylonian sun-god, who (supposedly) conquered the power of death.

December 25th was the traditional Victory of the sun-god Festival in the pagan Babylonian world. In the ancient Roman Empire, the celebration can be traced back to the Roman festival Saturnalia, which honored Saturn, the harvest god, and Mithras, the god of light, both were celebrated during or shortly after the winter solstice.