The Celts celebrated an early version of Groundhog Day on Imbolc – only with a serpent, singing this poem: Thig an nathair as an toll (The serpent will come from the hole) la donn Bride (on the brown day of Bride (Brighid) Ged robh tri traighean dh’an (though there may be three feet of snow) Air leachd an lair (On the surface of the ground.)
In the esoteric tradition the Orphic Egg represents the soul of the philosopher, the serpent symbolizing the Mysteries. The egg signifies the Cosmos as encircled by the fiery Creative Spirit. The egg, a symbol for the earth, around which the snake (a feminine symbol, as is the moon) winds itself. The spiraling snake resembles the path our moon takes - the head and the tip of the serpent’s tail representing the moon’s position at its apparent halt in orbit.