The greetings and farewells "Merry Christmas" and "Happy Christmas" are traditionally used in North America, the United Kingdom, and Ireland beginning a few weeks prior to the Christmas holiday on
December 25 of every year. "Merry" dominates in North America; "Happy" in the United Kingdom and Ireland. (See "History" for more on this.)
The phrase is often proffered when it is known that the receiver is a
Christian or celebrates Christmas. In the beginning of the 21st century, as Christians in increasingly multi-cultural societies continue becoming more sensitive to and respectful of non-Christians and non-Christian faiths, the phrase has become somewhat less ubiquitous than it was in the 20th century. (However, the commercialization of the actual holiday continues unabated.) The nonreligious sometimes use the greeting as well, however in this case its meaning focuses more on the secular aspects of Christmas, rather than the
Nativity of Jesus.