Pagan Pride Parade. Led by traditional Giants-.The Jack in The Green, The Morrigan, The Ravens,.Thor & Dame Holder, Hella with the Naughty Fairies and The Bogies. A gathering to celebrate Beltane in Central London May 30, 2010.Beltane (originally Bealtaine) is a cross-quarter day, marking the midpoint in the Sun's progress between the spring equinox and summer solstice. Since the Celtic year was based on both lunar and solar cycles, it is possible that the holiday was celebrated on the full moon nearest the midpoint between the spring equinox and the summer solstice.