Ireland’s very own patron saint St. Brigid’s Feast Day is February 1st also as Imbolc. Imbolc or Imbolg, is a Gaelic festival that traditional marks the start of warmer days and the arrival of spring. It also the halfway point between the winter solstice and the spring equinox. Saint Brigid of Kildare is Ireland’s most important female saints. Saint Brigid was born Brigit, and shares her name with a Celtic goddess from whom many legends and folk customs are associated.