""Imbolc" the first of this years lunar sabbats falls "late" this year at twelve midnight (23.54 hrs), on St.Valentines' day (the full moon -should a full moon occur before twelve noon it is celebrated on the preceding night as the "witches'" day is said to fall between twelve noon and twelve noon-). The "Beth-Luis-Nion" calendar referred to above does not celebrate the new year until after "the return of the light" even though the "old year" ends at Samhain, the intervening period being a time of reflection (and possibly also fasting), in The "Brythonic" Faith as they awaited the return of the life giving forces of The Sun. Other festivals such as "Beltayne" were celebrations of fertility for The Britons, one reason being that one would attempt to ensure that one did not conceive a child who would be "born into the dark", during the harvest or at any other time which would make their birthing, post-natal and infant care inconvenient, difficult or dangerous, for this reason many Britons were (and still are),, born during the middle of February (I am myself), possibly as an "Ash" (although as the lunar months fluctuate so do the periods over which the trees hold dominion).
Imbolc being the first of the four lunar sabbats is a celebration of Brygid (or "bride"), "The Maiden" who with "The Mother" and "The Crone" make up the three living aspects of "The Triple Goddess" "Arianrhod" ("Arian" = silver "Rhod" = wheel hence "Goddess of The Silver Wheel" -the cycle of the moon-, in both ancient and modern "Bri(e)ton"), whose consort is Kernunnos ("The Horned One" who is "lord of the trees")." http://www.arafel.co.uk/2014/02/beth-luis-fearn-brethonic-tree-calendar.html This year "Imbolc" is tomorrow.. https://www.moongiant.com/moonphases/february/2019/