The 12 days of Christmas is the period that in Christian theology marks the span between the birth of Christ and the coming of the Magi — the three wise men. It begins on December 25 (Christmas) and runs through January 6 (the Epiphany, sometimes also called Three Kings' Day). Additionally, the four weeks preceding Christmas are collectively known as Advent, which begins four Sundays before Christmas and ends on December 24.
On the third day ... Three French hens
On the sixth day ... Six geese a laying
On the eighth day ... Eight maids a milking
On the ninth day ... Nine ladies dancing
On the tenth day ... Lords a leaping
On the eleventh day ... Eleven pipers piping
On the twelfth day ... Twelve drummers drumming