According to John Sorenson, it is interesting to note that Teancum slew Amalickiah on the Nephite/Lamanite new year's eve, the night before "the first morning of the first month" (Alma 52:1). Amalickiah was sleeping deeply from fatigue "caused by the labors and heat of the day" (Alma 51:33). In the culture of Joseph Smith's New England, of course, New Year's Eve would have been icy. [John L. Sorenson, "The Nephite Calendar," in Reexploring the Book of Mormon, pp. 173-174] [See the commentary on Alma 52:1]