January 6 is an important day within the Christian calendar. Known as Epiphany Sunday, or Twelfth Night, it commemorates the three kings visiting Jesus. it is also a feast known as Nollaig na mBan (Women’s Christmas). In Ireland, Epiphany was also associated with death divination, Twelfth Night being the night on which the gates of heaven were meant to close after Christmas. In Gaelic Ireland the following day was associated with the Day of Judgement.
On January 6th 1839, The Night of the Big Wind, one would think the day of judgement had arrived. Ireland was hit by a mass storm but it was very strange. Bizarre weather lead up to the worst storm in Ireland's history.
Irish Mythology - Mythical Cycle - Book of Invasions