Why Christmas is not over yet? Christmas has become so heavily commercialized that it bears no repeating how the celebration has lost much of its meaning. Many people assume Christmas starts the day after Thanksgiving. That erroneous belief is due to the marketing blitz that begins on Black Friday. In the Church, however, Christmas begins December 24th. Since many people assume the Christmas season begins after Thanksgiving, they mistakenly assume it is over on December 26th.
When To Take Down The Christmas Tree
You might notice, or you may be a Catholic who leaves their Christmas tree up and keeps celebrating until January 3rd when the Church celebrates the feast of “Epiphany.” The feast of the Epiphany commemorates the mysterious visit of the magi to the Baby Jesus. This coincides with the 12 days of Christmas idea from the secular Christmas carol “Twelve Days of Christmas”
NCR However, according to the Roman Catholic liturgical calendar, Ordinary Time doesn’t officially begin until the Monday after the Feast of the Baptism of the Lord, which usually falls on the Sunday after Epiphany (January 3rd). This means that the Christmas season actually extends beyond the popular “Twelve Days of Christmas.” 
Others still, wait till Candlemas, also known as the Feast of the Presentation of Jesus Christ and the Feast of the Purification of the Blessed Virgin Mary, is a Christian Holy Day commemorating the presentation of Jesus at the Temple. It is based upon the account of the presentation of Jesus in Luke 2:22–40.
But the celebration doesn’t stop there! After Epiphany, the revelry continues until the Baptism of the Lord, the first Sunday after January 9th. This year, Catholics may very well wish to keep their decorations up through January 10th.
And if you want to be really traditional, you can celebrate what the faithful called “Christmastide” before the liturgical reforms that followed the Second Vatican Council. In the old rite, or what we today call the Extraordinary Form, Christmastide lasted for 40 days to correspond with the 40 days of Lent, and the 40 days from Easter to Ascension Thursday.
Whatever the tradition Christmas is not over just yet. Click here to view the United States Council of Catholic Bishops Liturgical Calendar 2021 Catholic Liturgical Calendar