The Religion of the Ancient Celts
Perhaps the most important object in nature to the early Celts
as to most primitive folk was the moon. The phases of the moon were
apparent before men observed the solstices and equinoxes, and they
formed an easy method of measuring time. The Celtic year was at
first lunar—Pliny speaks of the Celtic method of counting the
beginning of months and years by the moon—and night was
supposed to precede day.