Imbolc or Imbolg (), also called (Saint) Brigid's Day (, , ), is a Gaelic traditional festival marking the beginning of spring. It is traditionally observed on the 1st February. It lands about halfway between the winter solstice and the spring equinox. Historically, it was widely observed throughout Ireland, Scotland and the Isle of Man. It is one of the four Gaelic seasonal festivals—along with Bealtaine, Lughnasadh and Samhain. For Christians, especially in Ireland, it is the feast day of Saint Brigid.