Imbolc is the time between winter and spring on the calendar. Things are just now ready to come out of the dormancy of winter. In the old days, it was when the ewes began to lactate, anticipating the birth of the new lambs. Where I am, the bluebirds have started standing on top of the nest boxes, announcing that they are ready to mate and build a nest. (Ouch! It can get down to -20 degrees out there at night!)
Anyway, light some candles, and make some fresh starts. But stay warm!