Seasonal Days of Celebration:
Druids, past and present, celebrate a series of fire-festivals, on the first of each of four months. Each would start at sunset and last for three days. Great bonfires would be built on the hilltops. Cattle would be driven between two bonfires to assure their fertility; couples would jump over a bonfire or run between two bonfires as well. The festivals are:
Samhain (or Samhuinn) Literally the "end of warm season". November 1 marked the combined Feast of the Dead and New Year's Day for the Celtic calendar. It is a time when the veil between our reality and that of the Otherworld is most easily penetrated. This fire festival was later adopted by the Christians as All Soul's Eve, and later became the secular holiday Halloween.
Imbolc (or Brighid) Literally "in the belly". February 1 marked The Return of Light. This is the date when the first stirrings of life were noticeable and when the land might first be plowable. This has been secularized as Groundhog Day.
Beltaine (or Bealteinne). May 1 was the celebration of The Fires of Bel. This was the peak of blossom season, when domesticated animals bear their young. This is still celebrated today as May Day. Youths dance around the May pole in what is obviously a reconstruction of an earlier fertility ritual.
Lughnasad (or Lughnasadh, Lammas). August 1 was The Feast of Lugh, named after the God of Light. A time for celebration and the harvest.