Imbolc or Imbolg, also called Saint Brigid's Day, is a Gaelic traditional festival. It marks the beginning of spring, and for Christians, it is the feast day of Saint Brigid, Ireland's patroness saint. Its traditional date is 1 February, about halfway between the winter solstice and the spring equinox. Historically, its traditions were widely observed throughout Ireland, Scotland and the Isle of Man. Imbolc is one of the four Gaelic seasonal festivals, along with: Beltane, Lughnasadh and Samhain.

Brigid's cross or Brigit's cross is a small variant of the cross often woven from straw or rushes. It appears in many different shapes, but the most popular designs feature a woven diamond or lozenge in the centre. The cross is named for the Christian saint Brigid of Kildare.