"While most
countries celebrate Christmas on December 25 each year, some Eastern
Orthodox national churches... celebrate
the Great Feast of the Nativity on January 7... On the other
hand Armenian Apostolic Church celebrates
Christmas on January 6."
- Christmas (subheading: Orthodox
churches), Wikipedia
(http://en.wikipedia.org/wiki/Christmas)
"by the end of the
third century Christmas in Rome was held on December 25,
which coincided with a major pagan feast, while in the Eastern
churches it was observed on January 6. The Armenian Church has
maintained that ancient tradition to this day, whereas the Greek-speaking
Christian world switched to the Latin tradition at the end of the fourth
century."
- Christmas, The Armenian Church
(http://www.armenianchurch.net/worship/christmas/index.html)