SATURDAY, NOVEMBER 15: Preparations for Jesus’s birth begin in the Orthodox Christian Church as adherents begin the 40-day Nativity Fast.
The faithful are supposed to undertake this challenging tradition with joy and in a spirit of earnest anticipation. By fasting, Orthodox Christians embrace their own humanity and, at the same time, the moment at which God became human, according to Orthodox teaching.
The Nativity Fast is divided into two periods: November 15-December 19, and December 20-24. Both fasting periods follow the traditional fasting discipline (without meat, dairy, fish, wine or oil), but each also allows for fish, wine and oil on specific days. Several other holidays will fall within the Nativity Fast, such as St. Andrew’s Day, St. Nicholas Day, the Sunday of the Forefathers and the Sunday of the Fathers. (Wikipedia has details.)
Orthodox theology holds that bodily fasting ultimately influences the soul. During the Nativity Fast, the faithful turn away from worldly desires and toward God. The fasting includes not only bodily abstinence, but also fasting from negative emotions, hatred and greed. Prayer and almsgiving are a major part of the spiritual discipline. (Learn more from Orthodox Church in America.)
Note: The Nativity Fast is observed November 15-December 24 in the Gregorian calendar and the Revised Julian calendar. Followers of the Julian calendar, which is currently 13 days behind the Gregorian, will begin the fast on November 28 of the Gregorian calendar.