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).
Need to know the exact date of of the First Day of Spring this year? On the equinoxes the Sun shines directly on the equator and the length of day and night is nearly equal â but not quite. The March or Vernal Equinox is when the Sun crosses the celestial equator, moving from south to north. This date is considered to be the first day of Spring. Here's a chart that shows what day of the week the First Day of Spring is celebrated in Northern Hemisphere from 2016 - 2027: Year Day First Day of Spring Falls on