Most of the people take after the trend of the world to wish " Compliments of the season " , just the next day after Christmas. Christmas greetings extends till the feast of " Epiphany " ( the visit of the Magi ). After the Magi departed, the crib became empty- as the Holy Family fled to Egypt. After the feast of " Epiphany ", we remove all the Christmas decorations.
P.S. Don't spoil the freshness of Christmas by saying, " Compliments of the season ". Seasons greetings can be applied to any season. But the greeting, " Merry Christmas "- has the essence of Joy and Birth of Our Lord Jesus Christ.
So, henceforth be on the path, that gives Glory to God in the highest.