Definition of opponent for English Language Learners. : 1  a person, team, group, etc., that is competing against another in a contest. : 2  a person, group, etc., that is against something (such as an action, law, or system) : someone or something that does not want something to exist, be done, etc.
On the Celtic calendar, the traditional first day of winter is 1 November (Samhain, the Celtic origin of Halloween); spring starts 1 February (Imbolc, the Celtic origin of Groundhog Day); summer begins 1 May (Beltane, the Celtic origin of May Day); the first day of autumn is 1 August (Celtic Lughnasadh).
On December 8th, The Sun Goes To Bed Early. Next week, winter officially begins. The winter solstice, the time of year when the Sun reaches its southernmost extreme in the sky, will happen on Tuesday, December 21, at 6:38 p.m. EST. Though the solstice is considered the astronomical start of winter, many areas have already begun to see some wintry weather, including heavy snow near the Great Lakes.