In Christianity, Advent refers to the period of four weeks leading up to Christmas. It begins on the Sunday closest to November 30 (St. Andrew's Day) and ends on December 24. It is a time of anticipation and preparation for the celebration of the birth of Jesus Christ on Christmas Day.
Advent, (from Latin adventus, “coming”), in the Christian church calendar, the period of preparation for the celebration of the birth of Jesus Christ at Christmas and also of preparation for the Second Coming of Christ.