Today, February 2, is Candlemas Day in the Christian Church. It is defined in the OED as "The feast of the purification of the Virgin Mary (or presentation of Christ in the Temple) celebrated with a great display of candles."
In the United States today is Groundhog Day, the day considered mid-way between winter and spring. Legend has it that the groundhog wakes from his hibernation today and comes out from his burrow to see if he can see his shadow. If he can, he knows that the weather is going to continue to be cold for another six weeks. The origins of Groundhog Day are unknown, but it is probably related to Candlemas, as this old English song shows:
If Candlemas be fair and bright,
Come, Winter, have another flight;
If Candlemas brings clouds and rain,
Go Winter, and come not again.