The new crescent is now visible in the night sky. This is the Celtic Oak Moon which takes us up to and beyond the Winter Solstice. This was an appropriate name for the December moon as it was the time that the symbolic battle between the oak and the holly kings took place and the oak king won, signifying the return to the light.
Oak trees were sacred to the Celts as many of their religious ceremonies were carried out in oak lined groves. This Moon completed the Celtic lunar cycle and personified strength, stamina, life, death and rebirth.
From 'Mrs Darley's Moon Mysteries'