Armenian Christmas, also known as "Zatik" or "Theophany," is celebrated on January 6th. The tradition dates back to the 4th century, when Armenia was one of the first countries to adopt Christianity as its official religion. According to the Armenian Apostolic Church, Jesus was baptized on January 6th, making it a special day of celebration. Additionally, the date coincides with the Armenian New Year, which adds an extra layer of significance to the holiday.