Many Wiccans and Pagans celebrate Beltane. It is one of the eight solar Sabbats. This holiday incorporates traditions from the Gaelic Bealtaine, such as the bonfire, but it bears more relation to the Germanic May Day festival, both in its significance (focusing on fertility) and its rituals (such as May pole dancing).
Beltane has long been celebrated with feasts and rituals. The name means fire of Bel; Belinos being one name for the Sun God, whose coronation feast we now celebrate. As summer begins, weather becomes warmer, and the plant world blossoms, an exuberant mood prevails. In old Celtic traditions it was a time of unabashed sexuality and promiscuity where marriages of a year and a day could be undertaken but it is rarely observed in that manner in modern times.