Imbolc or Imbolg (i-MOLG) is a Gaelic traditional festival marking the beginning of spring. It is a Cross Quarter Day, midpoint between the Winter Solstice and the Spring Equinox.
It’s also called (Saint) Brigid's Day
(Irish: Lá Fhéile Bríde, Scottish Gaelic: Là Fhèill Brìghde, Manx: Laa'l Breeshey),
Imbolc it's one of four Gaelic festivals in this collection.